It has been used here for a while by some coaches. Other coaches - and I am by no means the only one - point out that it’s use fosters misunderstandings about the game. It means something illegal or unfair happened (unless you’re using it figuratively as the other form of the verb, to boil in its shell, in which case, carry on, I guess). There is nothing illegal or unfair about a D1 team coming in late on a player that another team thought they were in good shape on. It’s absurd to think that a D1 can “poach” a recruit from a D3 team. That’s why I said something.
Some people will call this nerdy, and would be disappointed if I didn’t point out word usage is grammar, not science. I don’t care about word usage because I need everything to be correct. 9 Times out of 10, I don’t care about the misuse of words. This one in particular jacks people’s expectations in this game. One could make a convincing case that a big part of 3.0 dissatisfaction is rooted in a misguided belief that when a coach pulls out in the lead on a player, that player is their possession; and when someone moves in on said player, someone is trying to take something from them. Enjoying this version of the game requires getting over that notion, IMO.