We did ATC avoiding action scenarios a few years back in the sim. Our OPS manual now reflects that the AP is to disconnected in order that an increased bank of turn can be achieved. Our airline is all airbus and hence if you left in the AP at high cruising levels then all you would get is a gentle 1g turn. Interestingly enough we were briefed that a number of other airlines across Europe refuse to allow their pilots to disconnect the AP so to plan on an ATC avoiding action event to become a TCAS RA.