I've heard people speculating that this has been done to give Belfort a shot at Anderson Silva in place of Sonnen, because his pending drugs charge has ruled out the rematch. So basically Belfort is "injured", but he'll be recovered in time to fight Silva (which let's face it, is the only fight he truly wants).
Like I said though, it's just speculation; not sure what the reality is.
Shady.
I like it.
"The lockdown is not the 10th Planet gospel; an open mind is the 10th Planet gospel."
- Amir Allam