First off, do the rules on Prob. Control still prohibit you from rerolling your or your opponent's super senses/impervious? I thought it did but my judge last night said he didn't know anything about that.

Second and a little more complex:

If you had the following:

X = Grounded friendly
O = Opponent on ground
E = Opponent on elevated terrain
F = Hovering friendly

OX
E|F

Does F have to roll for breakaway? Since E is elevated and LoS to O is blocked by X and the Elevated Blocking terrain? I know you can't attack through a diagonal of two figures or a figure and blocking terrain, but does any of that matter for breakaway?

Thanks.

Probability control allows you to reroll your dice once in your turn and your opponents dice once during their turn. You may not reroll your dice during your opponents turn and vice versa.

And as for the breakaway, F does have to roll as he is still adjacient to the opponent on the ground.

Hope that helps.