Spies is/was obviously talented, but if he can't find the mojo this year, it is probably time to call it quits are try another series. I know the issues of shoulders since mine has been cut into twice and I could never roadrace again. But he sort of reminds me of what is happening to Ryuichi Kiyonari in BSB.
BTW I have never been a huge fan of his personality but of his riding since back in the days of him racing the Aprilia Cup 250's against Hopkins at Pocono.
"Remember that an enduro tests the endurance of three things: your machine, your body, and your wits. Only one has to fail to keep you from reaching the finish line." Cycle World March 1966