JoeP MBC won't control boost anymore?

[howslowcanyougo]

98, TSI, AWD, Big 16, JoeP MBC.

I've had this JoeP in my Talon and working great for 2+ years now, and today out boosting the car dry from the carwash, and she stumbled bad and spiked to 25 lbs? So I thought WTF?!! I Pulled over and started playing with the JoeP trying to screw it OUT <as per instructions> to lower the boost, and got no change, even with it screwed all the way out, the damm thing STILL boosts up to 25 lbs under load?

WTF, did my JoeP go bad or could my waste gate actuator be shot or???

Any Ideas?

Thanks in advance.....

Howie