So you've seen specific emails or other evidence of this?
The likelihood of an email chain saying "hey lets block Chapmans MOH" is slim to none (and I doubt that was ever discussed in that manner). NSW disagreeing with the official narrative of events and disputing specifics of the UAV feed video with the USAF is what supposedly held up Chapman's MOH (from what I've read). This was done so NSW could save face, as their official narrative was that Chapman was dead, and the TL cut losses and got the rest of his team out. The now well known reality, is that Chapman was left alive, fighting while the rest of the team bailed. Only the Team, Slabinski and Chapman, know what truly happened. What is known, is that the battle didn't go down as Slabinski reported it, Chapman was left alone in the fight and continued to fight for an hour on his own, including hand to hand, while rest of the team bailed down the mountain. What is known is that AFSOF and NSW disagreed over the official narrative, this holding up Chapman's MOH for almost 16 years and that Slabinski received the MOH on a mission where one of his men fell out of a helicopter and was left, an attempt to recover his man, lead to Chapman being left on a mountain alive, in a fight, while the rest of the team bailed.
Now you could argue that his attempt to reinsert his team to recover Roberts was heroic. I'll go with that, I think it was, but the leaving of another man is a bit odd, considering that community claims they never leave a man behind. That said, I get it, it was a shit show, he was under extreme stress, team is getting chewed up and he claims he checked Chapman's body and assessed he was dead. But they left a man who was alive and in the fight behind, not a dead guy, a live teammate... And he got the MOH for it. I don't know what was going on in Slabinski mind, what he thought, or why he made his decisions. I won't judge him on that. I think his community should have came clean after the fog of war had been lifted and they saw what actually happened. Simply put, they fucked up, they argued it with the USAF to save face, they held up Chapamns MOH, and than put Slabinski in for a MOH, knowing he left a man behind, alive, alone and in the fight.
My$.02