http://www.a1-wrestling.com/blog/2015/06/04/tyson-kidd-injured/
Looks like he suffered a spinal injury taking a Muscle Buster from Samoa Joe.
Sucks for Kidd and Joe. Can't look good being known as a stiff rassler and then injuring a veteran like Tyson Kidd in your first match. Way to make a good impression Samoan Joseph!