An injury to Salty or Shoppach prior to March 1st would have resulted in Tek wearing a Sox uni in spring training. As for Wake, after seeing how poorly the back of the rotation guys performed in spring training, he probably regrets not suiting up. He has a very big ego despite his nice-guy public image.
They left the decision up to the players. If one or both of them had shown up, it would have been a fiasco. As of the opening of camp, neither had turned down the offer. Bobby V had to hit them over the head for them to wake up and see the reality.