Kurt is moving on automatic, his tail and arms hitting and whipping around as he takes out guard after guard. When the Doctor grabs his shoulder, he reacts by giving him a shove away from him....which knocks the Doctor into his Tardis. Two guards grab him from behind but he teleports away with a BAMF! sound into the strange box...
...and promptly curls up on the floor, not feeling well at all. Something was definitely different in here, he almost felt nauseous about it.
Hopefully the Doctor can close the door before the guards recover enough to come in after them.