What's even worse is that it's only the first inning and he's already whining. You would think that this is his first professional start. I would have gave him a warning if I were umping.
Decent article here, although not too much depth regarding mechanical tweek.
http://jaysjournal.com/2016/03/28/blue-jays-lefty-tim-mayza-an-arm-to-watch-closely-in-2016/
I think i referred it to a "mini slump", more directed to his power. Why all the excitement and why the sudden surge? You feel you found something to come out of the weeds and pound on? Pathetic.