I think you are correct. After Machuga disconnected himself from all of his sponsors, he pretty much spilled his guts on his opinion about the PBA and bowling in general. Brian Voss has also been very vocal for the past few years, so i'm not sure which one you are thinking of, but they both have drawn attention for their positions and opinions.
I was surprised to see Machuga bowling at the Masters, to be honest. He was wearing and throwing Motiv gear, but not sure if it is in an official capacity. His continued participation shows that he still loves the game, even though his opinion about parts of it appear to make him look like he has come to despise some aspects.