BEMIDJI — A lesser player would’ve crumbled it the situation Troy Johnson found himself in on Thursday at the Bemidji Town and Country Club. In the 102nd Birchmont Men’s Executive Division quarterfinal, Johnson, the defending champ, was 2-up on ninth-seeded Chris Hennum with three holes to play. On hole 16, Johnson made an admitted mental error, carding a costly bogey to bring Hennum within one. He couldn’t close out the match on the 17th, leavi…