Shane is probably a pain the ass who is used to everyone kissing his ass. Shane practically had to go to therapy when he didn't become best friends with Zachary Quinto during that The Chair fiasco and instead Zach was so disgusted with it, he took his name off of Shane's project. " It was Mr. Dawson’s apparent lack of collaboration, and inability to take criticism, that disturbed Mr. Quinto the most throughout the process."If you watch the documentary, there's an interesting dynamic in the later episode where you can see J* becoming visibly frustrated with Shane. J* straining to reign it in during Shane's inability to pick a box design is probably the most obvious example. The whole time Shane is just freaking out everywhere, with J* probably more concerned about the money loss if Shane doesn't follow through than palette coherency at the end. J* knows people will buy it for the name regardless of what's in it.
Now Quinto probably shouldn't have been considered a mentor to Shane because there was some conflict of interest with the other chic who was competing with the artsy fartsy movie that I can't be half-assed to remember details but my point is Shane is a PITA to work with more than likely and J probably had to mediate on dollar signs to get through it.