if they can use Statcast to judge spin rate / exit velo / distance ball travels / launch angle / distance defender travels / speed defender travels surely SURELY they can work the math to figure out the exact location that glove touches fan. there should be zero doubt whether Mookie was over the wall / above the wall / or in the field of play.
Joe West made the call he had to make. it was up to NY to prove otherwise. and they either wouldn't, couldn't, or didn't want to.......