My guess is that the kid's HS Coach is one of those coaches who doesn't feel that it is part of his job to help his players get scholarships.Sounds like a guy looking for a finders fee lol. Why would someone need to contact the coach he just decommitted from?
I'm sure you read that and thought "WTF" but I know many HS Coaches, mainly public school coaches, that don't call, text or email college coaches about their kids. Don't send game video (unless requested by a college coach) of their kids. Basically, they do not lift a finger to help some of their kids get scholarships. Sadly the number of coaches that I know who fall into this category outnumber the fingers on my hands.