I'd be surprised if we signed Hall again, but we did just sign Collin Mooney who played at Army. I remember the guy for his Sr year performance (1339 rush yards), but he went into his military career. I watched some vids of him blocking, and he looks really solid. May not be quite as fast as Hall (how many FB's are?), but he can move, he's not just a one dimensional FB. Anyway just the type of signing that usually goes unnoticed that I thought was interesting.
edit : Found this old article about his Pro Day.