You don't want to read too much into a waiver claim, but my first reaction to them claiming Sanchez was that it may speak to how the organization feels about Barnhart going forward. Not that he's gonna be DFA'd or anything, but rather that the talk of extending him is a thing of the past
I don't know that Sanchez is a major league starter, but I doubt he's a guy that is stuck on a AAA roster for the next three years.