So I have rookie Circe with one action token on her. I push her to mind control Spiderman. Pushing her makes her lose mind control. How does this resolve? Do I still have control of Spiderman? Thanks!

Circe's takes her pushing damage when her turn ends, and her turn doesn't end until Spidey's mind controlled action is competed, so Spidey is still affected by the mind control despite the fact that she loses it at the end of her turn.

Hmm, as far as I know you don't deal the push damage until after the action, which would include giving the mind controlled figure a free action.

The only time damage dealt would end the mind control is when you get the damage from an expensive figure. Every 100 points on the figure you target with a successful mind control action deals 1 damage to the mind controlling figure.

Both of you are correct. Pushing damage happens after the action is completed.

Also, the 'feedback' damage from using MC happens after all the MCd figure(s) are given thier action.