I'm not entirely dismissive of Hall but I don't think he really showed that much last year (only from one side and mostly against bad teams) and Clemens has shown enough to not lose the job especially if they still intend to play Bohm at 1B.
Certainly his value to the Phillies is higher than his trade value! But if he's looking at a month in AAA, it won't be long after that before we either looking at Harper at 1B or a trade deadline bat or both.