I have experienced a similar occurence.
I began expelling the "white and clear threads from the nose/sinuses" in February. Similar to you I expel more in the a.m.
I had some "yellow/golden" mucous discharge.
For me, this seems to occur moreso following exposure to toxins/chemicals wherein I am breathing in (for example) fragerance, household cleaners. This makes sense as the body's first contact with these toxins would be the respiratory system...sinuses).
The yellow discharge presents the notion that your body is fighting back and therefore your immune system is getting better (shifting)!
Can you describe the "golden colored scabs"? I am releasing some small brown "pieces" of dead candida fungus with almost a cheese-like consistency, in addition to the threads...??
You asked "Does this indicate the later stages of healing in the sinuses/nose or is this a bad sign?"
From my experience, I would definitely say you are healing candida in your sinuses/nose area. But, I don't know how long it will take for you to completely heal in this area. I've been wondering this myself : ))