I had no problems with any of the pro masters playing. I think it really makes for a interesting mashup of potential young pros with seasoned master players. The tougher players are the soon to be pros playing AMs (>970 refused cash). I think you just have to accept that in big AM tournaments you are going to have these players. Bowling green has probably the biggest non-major AM tournament:http://www.pdga.com/tour/event/16411
The advanced field is littered with these pro AM players who have refused open cash in smaller tournaments.
I expect this tournament to grow. The sandbagging will grow right along with it.