The strands are pure white. They are candida all right. I don't think enemas stir-up toxins directly. Think of the colon as your sewer pipe. Now an enema pretty much cleans it. The only way it can affect toxicity (negatively) is by affecting the bacterial population.
2 possibilities:
1. Candida is just there to mop up undigested food/toxins. Remove the candida and you have nothing to clean up. So the underlying problem is broken digestion/toxicity.
2. By killing candida you are majorly upsetting the bacterial balance of the gut. Instead of the good guys proliferating, what you get is some of the other nastier putrefactive bacteria taking over the job of candida.