Someone apparently doesn't know the protocol for letting someone engage in a flashback. That'd earn Gren a yellow card at the very least. Fortunately, though Wade's brain hasn't really clued into the danger about to be visited upon his ribcage, his instincts certainly do, and he's had about three decades to hone said instincts to razor sharpness.

Gren's foot, meet Wade's hands.

The mercenary instinctively curls in on himself, softening the blow with his hands and gripping Gren's foot in a vice-like grip. At the same time one of his knees jerks up, catching the other man behind his knee and causing it to buckle. His other hand darts out, preparing to grab the man's arm as it inevitably shoots forward to protect himself from falling, at which point Wade will send Gren ass over teakettle with one well-timed yank off balance.

He may be a resourceful motherfucker, but even a dude as strong as he is has to obey the laws of gravity.