Thanks for the advice. I guess I'll stop the heet. I just never really thought about it because it was so normal for me.
The first time happened in warm weather though, probably 2 months after I had last used it.

I did go back to the other dealer, gave them my printout of that tsb, even though as you pointed out it didn't match my problem exactly. They apparently overlooked that, and flashed it, didn't charge me anything. They also said that it had not logged any codes (again) and that if I had any more trouble that they would go through all the red tape to replace the ecm as warranty. Got it all on paper too.

So, I was completely shocked, and pretty satisfied. hopefully that fixes it, but to be honest I don't have high hopes.