Hello Gentlemen,
Fugitive is absolutely correct. I have seen stirring, and I have seen scissors, barrel rolls, etc. The two look nothing alike. One is actual ACM, the other is just overwhelming your stick input to the point your plane trips, flips, & flops left, right, up, down, and many combinations of those directions. I believe what the OP was describing is actual defensive ACM.
Have a great day,
Way