User blog comment:The Milkman/No Love For Leviathan?/@comment-86.148.145.142-20130721150731

Having Vega in the lab actually made some sense to me. Him, Liara and EDI are the only people who will be alive by this point no matter what. Garrus, Kaiden/Ashely, Javik and Tali can all either be dead or not purchased (in Javik's case). Edi was already with the Commander and had her own job to do, so either Liara or James had to restrain Ann. Can you imagine Liara restraining an agressive, possessed person? That's why James was there at that part imo.