Did you, by chance, think to check the brace height and axle to axle length on your bow before getting all flustered? Your bow' s rigging has probably got so much creep in it that it' s all loose, the brace height is lower than it should be and the string is whipping way too far forward on the shot, snapping your wrist when it didn' t do it before.

You probably don' t need to do anything more exotic than twisting up your string and cable(s) and getting things back to spec.