I think Melvin hit the apogee awhile back. Seems like he's been slowly picking up speed in going downhill for the last 3-4 shows he's done. Guy still has the great shape to his muscles, but he doesn't come in nearly hard enough, and in the above pictures, it seems like something is amiss. Maybe there is a bit more behind the scenes we're not seeing and/or hearing about.
On a side note, Chad Nichols was talking about Melvin on MM the other day...while what he said proved to be far far FAR off the mark in the photos up top, he was right about one thing; Melvin does have one of the most impressive hamstring "drops" ever. I never paid attention to it, but even in the pictures here, you can see how far his hams hang on his leg...like that of Prince or Atwood.