That's just so strange that it's Holloway. I don't understand the timing. I swear in that scene he was the one screaming as Shaw and that other lady were helping him back to the ship.
So that was apparently on the first trip out, then everythings cool and they go bone, then he goes back out when more people get jacked up/infected, and Vickers gets all 'he's a creeper ass alien mutant spy, and he's gonna screw our entire ship' and lights him up?
No spoilers, please, just a general nod to whichever direction applies if you feel like replying.