I've been on team Getaway since the mutiny. The only truely scummy thing he did was setup Tailgate to be possibly killed, but that's understandable that he'd not be thinking straight when he's so totally justified in his hate and disgust. Especially now that we know Megatron has essentially gotten off Scott free, it's an even bigger piss on the grave of everyone he's killed. Add to that Rodimus' massive character regression and the seemingly pointless and dangerous quest and I'd probably be right alongside him if I were in their shoes. Megatron is, at least, a reminder of great trauma. I doubt any of them were thinking entirely fairly or rationally, nor could I blame them. But yeah, nice to know he didn't intentionally leave them all to die.