According to Matt Striker's Twitter page, he and WWE have parted ways.
Was just informed by @WWE that my contract will not be renewed. I am now available 4 appearances, signings seminars & wrestling. Deep breath— Matt Striker (@Matt_Striker_) June 20, 2013
He also added:
Thanks for all the support. To book plz email ForMattStriker@gmail.com @WWE has your entertainment first in their mind. Support that product— Matt Striker (@Matt_Striker_) June 20, 2013
WWE.com has also posted a statement regarding the matter.
Striker had been with WWE since 2005, when he quit his job as a school teacher, after the school had discovered he was using sick time at work to pursue a career in professional wrestling.