Yes, because the chlorine and sodium hypochlorite being absorbed into the skin in pure bleach is the same as the Mineral Oil, Propylene, Water, and Petrolatum that is absorbed along with the measly 1% Tolnaftate anti-fungal medication in an OTC cream.
Listen, I took the advice of my doctor, which was not to give the fungus anything to feed off of and to keep the ringworm spot as DRY as possible at all times. Most people come back too fucking early from ringwork and guess what? It spreads to the next guy who comes back too early, etc., etc.
The bottom line is, take your time, be conservative with your return date and spare everyone the risk. It's simply not worth it for you to put people at risk because you can't miss one extra week of class in your 10-15 year jiu jitsu career.