It isn't about the inverted W, it is about why it is inverted. His balance is all screwed up which puts extra pressure on most of his body, you can have an inverted W with good mechanics and be ok but his mechanics are just awful. If I had to put money on his career I would say the Nationals are in the playoff hunt mid season this year, they push him to 180+ innings, he suffers an injury mid season next year, comes back from that and isn't the same guy.