I think that weight loss rumor was bunk. Gil Brandt mis-typed up his report, the only one I'm aware of, and everyone ran off of that. His Pro Day was a week after the Combine, not sure how you drop 15 lbs in a week, but my love handles would like to find out.
I do agree it will be tough for Wolfe to get in the 1st round. It's a deep DT draft class, and while there are quite a few 34 teams at the back end (and the Pats are very interested in him "supposably"), I think he goes in the early-mid second to a 34 team as a DE, though a team in the middle that likes undersized DTs like Tennessee or Chicago makes sense too.