They absolutely knew what was going on all day; Tom Loy mentioned in his post that he had spoken to them early afternoon and THEY told him the kid wasn't sure what he was doing. That doesn't mean they agreed with what happened. I think it's pretty clear they didn't. Now, could that be embarrassment or guilt because of the way it was handled? Possibly. But I think from watching that a few times they also didn't agree with the decision. The brother was grinning but that's it...
The fact the kid talked to OSU all day and didn't reach out to miami tells you everything you need to know. If it was all about the money and he wanted to be a Cane, he had plenty of time to see if Miami would match. That makes me think he wanted something different all along... IDK about the UGA aspect. They didn't seem to think they were in it at all recently.