This is the one time I think "bags" were actually dropped. Most likely to his father.
There is just no way a kid can all but be a declared commit for months to then, after a dinner date and then all of Thursday to mull over what he's known for months, to suddenly do a 180 without foul play being involved. I would suspect his dad got plenty of incentive from the Maryland coaches to do his best to get his kid to commit and he'll be rewarded.
Either that, or George Brown is that bad of a recruiter and had zero idea that he was getting played... which is entirely possible, but not likely.