I think "tipped" might have been too strong on an implication. Apparently the storage guy was sufficiently spooked and contacted Sitton. Which could be viewed as conspiratorial but I think could also be a reflexive action. The guy I spoke with said everyone in Sitton's circle wants him to cough up the parts and thinks he is way out of line. He said no one one doubts he knew it was stolen.
Karma is a ***** and Sitton has a huge bill coming due.