Hi Ralph t.m.
Mad Flt Scientist posted a very comprehensive answer in Dec 2006
here.
Based on his answers - I reckon my A320 would still be controllable at MMO + .07 Mach or VMO + 50 kts. However, I have no intention of deliberately verifying this.
P.S. Before everybody with a copy of A320 FCOM explains how the protection Laws operate - let's assume they were turned off / failed for some reason. (e.g. Frozen pitots)