He also doesn't remember Shinra grunts being that wiggly. It's all Cloud can do to remember to make sure the kid's not pointing over an edge when he lets go, not wanting the fury of that backward momentum the trooper's putting into his struggles to just topple him right back over the edge. Cloud may not have the fondest memories of being in the army or of Shinra soldiers but he was one, once, and unless they physically put themselves in his way (in order to impress a girl in an elevator or otherwise) he doesn't actually want to hurt them.

Especially when they sound so damn young.

So he lets his jaws snap suddenly open and release before he can end up too bruised by pointy elbows (he's learned from Tifa how dangerous those things are). And maybe it's just him being a bit mentally snarky that he does it just as the kid puts some real weight into struggling backward. After all, wolf or not, he did just save the kid's life.

Then he just plants his butt, tail wrapped calmly around his legs and watches.