The only way they could use that excuse would be if the bolt holes were off just a bit. But then it becomes a "if they're the wrong size wheel...why did you install them?" issue. Also, if they weren't the right size, you shouldn't use the "get a bigger hammer...it'll fit" mentality.
I just got off the phone and Mazda reiterated they are the right size wheel. And like you mentioned, even if they were not, why would JL install them? In order to complete the transaction with the fellow I bought the wheels from, I had 24 hours to determine that they were indeed the right size. I trusted JL as 'professionals' to make that determination for me. If they did not fit, I would've returned the tires. I have the email exchange with whom I bought the tires from stating this. The Mazda folks are taking pictures of the damage for me and writing a detailed inspection of what they found. Looks like I'll be seeing Jiffy Lube in court. :uzi: