It's not that simple. I mean, even if we ignore the issue of going back the way we originally came in, we still lack the necessary keys. Even Sentience needed to bypass an electronic lock in order to get to the elevator, and the process required to access the mainframe... well, I can't exactly say what went into it, there was a lot going on there.
[Technically, he could still show her the bruises.]
A colleague of mine arrived today. Penelope Garcia? She's our tech expert, so I'm hoping she might have a few ideas at least. [And then he realizes that he just introduced someone who isn't in the room, but hasn't even given her his own name yet. Woops.] Oh, I'm uhm... I'm Spencer Reid. Doctor Reid.