So I was riding the other day, came to a stop light. When it turned green I tried accelerating only to have the drivetrain slip horribly, i nearly went over the handlebars. Upon back pedaling or skidding, the cog also slips a bit. I have a crappy cyclepro cog on my pro v wheelset. Is the crappy cog the problem? Ive been running it for like 6 months with no problems. Installed by the LBS.

Why would it slip forward? Is my hub stripped? I fear the worst on this one.

The hub is a flip flop. Does anyone know if that limits me to only running a freewheel on the other side or does it not matter and I can run fixed on either side? (In the event the side of the hub ive been using is stripped)