This tweet sums up what happened and while it stinks for the kid, this is life now in the CFB recruiting world. Kids are going to get squeezed out for portal kids, especially with a new coaching staff. Don't know why they had him on an OV, but the fact that this guy mentioned that he was squeezed out because of the portal, says everything I need to know.
My guess is like someone else said, Mora and staff got good news they weren't expecting and maybe something came up on the OV and they decided to go a different direction. It stinks but kids decommit all the time. Should colleges stop recruiting these high schools because a kid decommitted from their school??