mat, your question is very imprecise. "After the stall" refers to what now? You need to define it.
The physics of all this is continuous, so wherever you want to locate "the stall", the CoP just after that point (say, 0.1 nmph after) will be close to where it is just before that point (say, 0.1 nmph before).
Exactly what that aerodynamics (physics) is will depend on more characteristics of the airfoil than whether it is symmetric.
PBL