Technically, Mesmero controlled Alpha Flight to a draw in volume 2. He left on his own accord. The new team (with the exception of Man-Bot...Man-bot!) couldn't resist Mesmero's power...not even "Murmur". Not even a little bit. Not even an attempt. Not even an effort.
The less said about the murderous Mesmero and the Sentinels who didn't preserve human lives in vol. 1, the better.