I'm not sure if it was my fast you read about or not but you are absolutely correct about the fact that you will heal on a juice fast. I did a 40 day Water Fast and followed it up with a 40 day juice fast two months later (raw food in between). I feel that the majority of my cleansing was completed on my Water Fast while I definately noticed more healing going on during my juice fast. I can't comment on broth though, I've never drank any. :)
It states "Juice fasting has a greater ability to encourage healing compared to fasting on water. Juice fasting cleanses the body while supplying a remarkable increase in vitamins, minerals and enzymes."