I am not totally convinced about the theory of recovering the gut microbiota to eliminate candida. It is true the friendly flora keeps candida in its yeast form but when candida mutates to its germ tube form, recovering the flora isn't going to revert candida back to its normal state.

Candida is dimorphic.  What form it takes on all depends on the pH of the terrain. 

When candida mutate to mycelial, it penetrates the cells ( the intestinal lining) and is a pathogenic infection you need to eliminate with proper medication.

It is the hyphae that form that allow Candida to dig in to the tissues when it goes fungal.   Germ tubes are the precursors to the hyphae. But again it is pH that controls whether or not Candida will remain in a yeast form or will go fungal and develop hyphae.  The hyphae are finger-like projections that allow the Candida to dig in to harder substances like organs.  Mold also develop hyphae, which is why it can dig so deep in to hard things such as wallboard or cheeses.

Despite this Candida rarely goes systemic as the rest of the immune system will generally deal with Candida making it in to the bloodstream.

I know of CDSAs showing proper levels of friendly flora, and those people still have an intestinal candidiasis. My own case is an example. I have benefical Lactobacillus 3+, E. Coli 3+, and Bifidobacterium 2+, and I still have intestinal candidiasis.

What people need to realize is that there are literally thousands of different strains of beneficial flora in the intestines all playing role in controlling pathogens and helping to maintain our immune system.  We cannot look at one or two beneficial bacteria and determine the health of the intestinal flora.  That would be like looking at a healthy heart and saying the entire rest of the body must therefore be healthy since the heart is healthy.  

I think the immune system plays a big role keeping candida controled.

Exactly, and 80% of the body's immune system consists of the intestinal flora.

I have been in antibiotic forums asking people who have taken them for months if they have candida symptoms. Many of them feel well. So, this demostrates me you need to have some level of immunesuppression at the time you take the antibiotics to allow candida to take hold.

The immune suppression comes from the killing of the flora.  This shifts the pH to the alkaline side allowing Candida to take hold, reduces bacteriocide and peroxide formation that help with controlling pathogens, etc.

But there are other things that need to be kept in mind.  For example not all antibiotics will affect the flora.  Some antibiotics can target an area for example some antibiotics that target the urinary tract.  These antibiotics do not affect the flora.  Some people will also be taking probiotics and/or prebiotics while taking antibiotics that can help control Candida overgrowth.  And not everyone reacts the same to medications for a variety of reasons.  If everyone reacted the same we would not have to say these are possible side effects.  Instead we could say these are the side effects you will experience.  And finally a lot of people don't have a clue what real Candida symptoms are.  So people frequently mistake symptoms of something else for something to do with Candida.  There was just a great example posted where someone is posting classic reactive hypoglycemia symptoms but they are being told this is a die off reaction.  Conversely people can have Candida symptoms that they may not attribute to Candida.  So to ask people how they feel after taking antibiotics really does not tell us much.

I think a healthy immune system is able to control candida until the friendly flora recover.

And again 80% of the immune system is the intestinal flora.  Macrophages on the lung surface have nothing to do with Candida in the gut.  Interferons in the blood have nothing to do with Candida in the gut.  Peroxides formed by cells other than in the gut have nothing to do with Candida in the gut.  The gut is pretty much its own immune system.  If pathogens go beyond the gut though then the rest of the immune system can kick in.

Selective IGA deficience

IgA is only one of the antibodies generated in the gut.  There is also IgM and IgG.

and damage to the intestinal lining can play an important role to allow candida to overgrowth in the intestines.

This is a chicken and egg thing.  Did the Candida overgrow from the damage or drugs given for the damage or did the Candida cause the damage from going hyphal?

Once candida is fungal, intracellular, you must eradicate it.

We have other immune cells for that such as granulocytes and monocytes.

The friendly bacterias don't revert this condition.

But again we have other immune cells for this.

No everybody who takes antibiotics develop candida

Actually it would be Candidiasis since everyone has Candida as a natural part of the body.  But I explained some reason why everyone taking antibiotics does not develop Candidiasis earlier in this post.

and people with a healthy immune system take antibiotics and their immune system keep candida controled during the time the flora needs to recover.

Not really since again the flora make up the majority of the body's immune system.  And most of the remaining immune system has nothing to with the gut flora as I also pointed out earlier.

I agree the flora is a must when the infection be eradicated.