It takes a lot more effort than he can afford to put into it but if need be, he could tear and gnaw his way to some major artery this way. Luckily he won't need to, since Jack'll do the honors for him and in this scenario he doesn't care so much if he gets the kill or simply acts as the decoy.
He takes a few steps back as the raptor goes down in an effort to avoid the claws and teeth during the death jitters. The blood is leaving a nasty taste in his mouth and so he spits it out, trying and failing to get the game face to go down. Fuck, it's been too long. Just give him a moment to think really hard about baseball and he'll be fine.