Well, thanks for the replies, everyone. I'm going to the dealership tomorrow morning and present the facts to the service manager and see what kind of explanation he has to offer me. At the very least, I'll have the satisfaction of knowing that I wasn't taken by anyone's antics.
I probably won't get any money back, but so be it. I would at least like some king of explanation as to why the sensor was disconnected. The only thing that I can actually prove is the fact that the engine does have compression and does not need to be replaced, contrary to what the written service report I have says.
I like to have some kind of closure to things like this...so I guess it's really for my own personal satisfaction. We'll see ehat happens in the AM.
Thanks to those who replied.
John