I don't know about digging his heels in, but from personal experience, if you get two opinions on anything medical you naturally go for the best scenario. Nobody wants to tell their boss they wont be in work for sixteen weeks after being employed for about five. As has been said, with rumours of Tyson coming back in Likit would have convinced himself he could be back in four weeks, whether he could have remains to be seen. Good luck to him though and here's hoping his shoulder does heal sooner rather than later and he finds another team.