Jack goes with the push, letting Spike's strength help him manouevre up to his feet. Spike does get in another punch or two on the way, but they glance off him as he moves, dancing back, ready for more, even if fighting is a lot more restricted here by the narrowness of the corridor. Still, that means a lot of walls and walls are fun for this sort of fighting. He courteously waits until Spike's back on his feet too before moving in with a kick or two designed to back him down the corridor, and he's grinning again as he focusses on the scuffle, mostly forgetting now about listening for the whine of approaching Daleks or the screams of civilians-turned-fighters being exterminated on the floors below him.