Well, analyzing the list:
C Brian Barthelmes - Mruc is on the roster, so he's not likely.
P Danny Baugher - Saurbrun gets the gig, but they could always decide to bring him up and give him a shot for a game experience within a specific situation. Unlikely though I'd think.
T Sean Bubin - Unless he came in with great natural strength, I don't see them thinking that he's ready for the roster - then again, they could be expecting things to be so physical in the trenches that they want the depth at OT.
WR/CB Bam Childress - this is my first choice off the P-Squad, he gives Brady a second and younger Troy Brown to work with.
TE Matt Kranchick - Perhaps for straight blocking, anyone know how he is as a blocker?
P Tom Malone - I don't see it.
CB James Patrick - He was here before so he may know the calls and stuff, he could also be a STs candidate if he's a good tackler.
DL Santonio Thomas - He would be a good DE, but we've got lots of them, unlikely unless my fantasy line-up of 5 DL and 2 LBs comes to pass.
My #1 choice would be to bring back Guss Scott, with Bam my #2...place your bets, the Belichick is wild...