[Joebie]

You took it back to the same mechanic that did the OFHG?

I'd be concerned that he's lying to cover his own ass or something.

Lets say he did mess it up, he can either take the blame and pay for a new engine and the time to install it to the tune of like $6000, or just lie and say there isn't anything wrong and he has no idea why the engine seized. Easy choice for anyone with even slightly questionable morals.

I'm with 9krpm, complete engine failure happening immediately after you pick up your car from getting worked on sure is one heck of a coincidence, right?

This is why everyone should DIY everything. You can only trust yourself. I can't say it enough.