If somebody told you the story, you wouldn’t believe it. Kid goes from being banished to the bathroom by a coach during halftime as a sophomore — and being forced to drive home from that away game in the equipment van — to surrounded by reporters after an NCAA tournament game that he played a big part in winning.Call it degradation to exhilaration. Josh Harrellson is that player. The 6-foot-10 post player for fourth-seeded Kentucky had…