Samoa Joe

What happened to Joe?  They said he had to forfeit his newly won NXT Title due to injury, but they never said what the injury was or when he was coming back, and we haven't heard any word from him on this since.  Was it just a way to get him off TV to reset
NXT 2.0 and crown a new champion or is he legit injured?

I'd say either one is equally likely, but no one has actually said anything about it.