I can agree with the focus issue. I don't think it was a dislike of the contact element. My personal feeling, and its only my perspective, was that Schuster was not well handled from the start. This was a kid on the rise and his first game as 5/8 had been commended by many. Then Des brought in Foran, suggesting he was a backup maybe even for hooker. But he kept him at 5/8 and had Schuster play second row. This meant the kid had to bulk up to fill a forward role, including playing closer to the centre and doing far more defensive work, which 5/8s don't usually have to do. So he bulks up, and there are suggestions at that time he isn't happy with the switch. Eventually Foran is moved on, but by that time Schuster has loaded on weight for a forwards role. He's given the 5/8 spot but now he has to lose the loads of weight. As well he suffers a succession of injuries. Now again a coach comes along and wants him back as second rower.
Personally I think he got the ****s. And I know many would say he should just accept the opportunity of playing first grade. But so many were anticipating this kid as the next big 5/8 wonder and it didn't happen. And some of that was because of how he was handled. Players do get annoyed with how they are used. Jamie Lyon 2004, after success in his first years he walks out of a contract at Parra and ends up brilliantly succeeding in England before making his mark with the Sea Eagles. As was mentioned I think by Terry Hill, young players can make strange decisions, get fed up of some things the rest of us may consider petty. But to them its important. I think this happened to Schuster. I suspect he'll be back and succeed elsewhere.