Monty was a dancer before he was an animator. He had a different priority on conveying motion, and focused only what's on interesting. If your walk cycle is dumb, then it's dumb, but it's just a transition shot. If your fight scene is dumb/boring, your art has failed. >>523748
They were live-training new animators on the show, basically giving them the equivalent of inbetween-artist work to get them up to speed. There's a lot of unimportant shots where the quality suddenly tanks for 10 seconds to a couple minutes.>>524550
He was iced out of the company for trying to buck the kikes at RT who wanted to throw out Monty's vision of the series in favor of quick-cashgrab garbage. They cut out and changed huge portions of the show's plot, fucked up characterizations, refused to consult the only other person who knew what was intended (his widow), etc. RT without Monty or Shane got us RWBY Chibi.
Shane wrote an extensive open letter about what happened. http://roosterteeth.com/post/51265744
Nothing surprising, really, when you remember that RT is a talentless hack firm based on using the popularity of Babby's First FPS to pump out effortless Machinima. They needed another golden goose after Halo's popularity started to wane, and lo and behold, RWBY outperforms RvB almost immediately. Shane clung to the idealism: he had been personally trained by Monty. But that's not the fastest way to wring shekels, so he had to go.