I was just thinking this as well. It seems like his only point in the game (as it stands now) is so that dr. Sorkin wasnt talking to herself when working on the computer. ... Then he promptly runs over to the quarantine pens and jumps in as his mission in life is complete >.>
Im thinking he must have had at least a slightly larger role in the game or something, but it got cut. I mean... If he was there to also show that whatever was in the quarantine pens got out it wasnt really nessisary. With the power going out for so ling we can pretty much figure everything was free.
This is a bit off subject but i also found it odd that dr. Sorkin kept saying they were isolated and far enough away from the dangerous predator pens that they wrre safe to walk around her lab area outside. But the quarantine pens are close enough to them where the assistant can run off to them, get killed and get noticed in... What? Less than an hour maybe?
Maybe she killed him >.>