User blog comment:Zolnir/RWBY Official Manga Chapter 5 & 6 Mini Talk/@comment-25936766-20160526020434

"If the White Hair Girl had chosen to leave Bestia after seeing his atrocities, then Bestia would have truly transformed completely into a beast with no chance at redemption."

So...in this case, you're saying Blake was Adam's morality chain, the one thing preventing him from truly crossing the line, and Blake abandoning Adam was such an emotional punch, that it pushed him into truly crossing said line and then some.

That's what you meant?