I believe you're right Stephen. The only thing I'm wondering, is how my Throttle Body plate got stuck open when my engine was revving up on it's own.

Hmm, come to think of it, that's when they broke my plastic factory BOV. Perhaps he took off the factory BOV or the factory I/C piping to inspect the damage done to the BOV and one of the bolts somehow found its way down to the I/C pipe. The car then sucked the bolt into the throttle body plate, hence why the engine was revving up on it's own.

I had the car flatbedded into the dealership when this was happening. The dealership stated they could not replicate the symptoms. Perhaps the bolt fell through the throttle body plate, fell down one of the intake manifold runners and lodged itself somewhere in the valve cover. It's pretty hard to believe, but 2 years and 20,000 miles later, that bolt is now wedged between one of my exhaust valves and screwing my engine up. Is it possible that the bolt lodged itself somewhere in the valve cover during the 2 year period and maybe finally broke itself loose and made its way down to where the valves are? I know that it would be pretty hard to believe, but it's possible I suppose, right?