Look, I don't know what went on behind the scenes, but it's pretty clear Melvin had to go. I'm not saying that makes it right that they attached him to Kimbrel. But I really don't think just keeping him and hoping for a rebound was an option. Every facet of his game was awful and I'd guess there were other problems.
I understand, but you simply cut him. Like Uggla, like HO (basically).