Randolph "[Owing] to personal issues, Kurt Angle has been granted an early release from his contract. WWE looks forward to establishing a new relationship with Kurt in the near future."
Apparently his body is so banged up (and his neck – let's not forget his neck – which he broke and still continued to wrestle for a long time) that he was taking pain medication just to perform each night, so I hope he recovers enough to come back again. Several wrestlers have suffered neck or back fractures, including Steve Austin, Chris Benoit and Shawn Michaels, and so far Austin hasn't been able to wrestle again.
See related link.