Josh does not like the QB's inability to get the receivers the ball, the underutilization of the receivers, or the offensive playcalling that he has seen. He has wanted to be a Vol, and UT has been his #1 choice, but he is weighing all options that would affect his NFL career.
Being said, with Boyd and Murray leaving, and Winston possibly being incarcerated, I believe we still land Josh; otherwise, look at Clemson becoming a factor with their high-powered offense and his relationship with Deshaun Watson and Demarre Kitt.
Despite Kamara's tweets, I think the coaches re-contacted him, because they knew that he would make it public. In doing so, it will cause Malone to either contact the coaches and say, "Nah, that's my spot," or "Go ahead, do what you gotta do," and in turn, VolNation can be prepped ahead of time and not be letdown come Dec 4th (or Dec 2nd, if rumor holds).