Not an easy one, Telemark. I don't think it would be a bad thing to start making some alternate GAL plans. However, when you're there, be the best Telemark you can be. That may eliminate some time that you'd spend auditioning for your oscar.
However, another thought - what would be more of the same behavior? What would be something you could do differently when the nephew comes to visit? What would be a 180? I'm not sure you should be too worried about it being the son of your W's D coach coming over, unless he is more involved with his Mom's thoughts than would be typical at that age. Just some random thoughts....