To be honest he was sort of expecting the shove, almost immediately pushing himself to his feet. He waits until the other is inside before slamming the door shut behind them, locking it before taking a run to the controls ahead of him.
"You might want to hold onto something!", he called to the other, circling the controls while flipping the right switches to start take off. The TARDIS awakens almost instantly beneath his fingertips, the entire room seeming to shake and shudder as it begins take off.
It isn't until everything's well under way before he can turn his attention to the young man again, settling beside him on the floor. "Thank you,if you hadn't done that...well we'd still be locked up.", he frowns a moment when he notices something is off. "Are you alright?"