Not really IMO. There are vendor agreements, venue contracts, admin, player contracts, TV contracts, millions in legal that is already in place, and a lot more. I am speculating, some of that may have gone by the wayside, and I don't know any of the details, but $15M is a rounding error if they think this can even be modestly successful aka profitable at all. Vince and his crew certainly put more than $15M in sweat equity alone getting it off the ground.
My key question is how much, if any debt did they also assume?