You can sense the concern growing each and every day. What was a juggernaut headed for 70+ wins two weeks ago is now a team that has lost three straight, six of eight and in second place, IN ITS OWN CONFERENCE. Talk about a change of direction. The Celtics  haven’t hit a bump in the road, they’ve hit a Boston-sized pothole that has messed up their alignment and they desperately need a trip to the garage to get it fixed. Problem is their next pit stop is against the Cavaliers , the team ahead of them in the East, in Cleveland Friday night where they haven’t lost at home this season in 18 games. Wednesday night, someone named Von Wafer  drilled a three with 44 seconds remaining and the Celtics couldn’t overcome Yao Ming’s 26 points as Houston handed the Green their sixth loss in eight games since Christmas.