Okay, he didn't think this through. He hits the ground and rolls with the person controlling the water and yeah-this isn't exactly how he'd wanted this to pan out.

"now will you-Oh shit." He gets out just before they're both enveloped into water. He does, indeed, need to breathe. There's nothing to really launch himself off of aside from her and he's not going to hurt her if he can help it. Which way is out?

He opts to try and swim backwards, falling out of the bubble with a harsh flop once he gets to the edge. He coughs a moment but gets back on his feet, now absolutely soaked. thanks. God, how does he stop this?

He could try tackling her again-tackle her right out of the water sphere which looks like his best option right now, he just needs something to give him the momentum.