Using Compulsion

Sometimes, you just gotta do it - you have to use compulsion to make a point with your dog.  Moto had it happen to him at the fun match this weekend.  While I try to be mostly positive, I was thrilled to have the opportunity to give a correction, and even more thrilled with the way things turned out.
Moto was in the Open class, and just as we entered the ring there were several loud claps of thunder.
Moto does not like thunder.  He isn't terrified of it, but it does put him on "alert".  His ears were up and he was quickly surveying the ring.  I paused before entering, giving him simple things to do (pivots) and treating.  It worked somewhat.
First exercise was Retrieve on Flat.  I threw the dumbbell.  I sent Moto.  He went halfway, paused, and decided that was as far as he could go.  Running forward, I put my hand under his collar, we ran to the dumbbell, I gave him a light ear pinch and said "take it" (he did), ran backward, release.  Repeat throwing the dumbbell.  This time he did a beautiful job.  Good boy!
Next:  Drop On Recall.  I called.  He came.  Signal for the down.  No, he did not want to do that, he paused, and began a death march in.  Not good enough.  Back to where I said the Down command, pushed him into a Down, set up again.  This time his drop was a thing of beauty.  He came in after the down nice and crisp.  Good boy!
The rest of the run was qualifying.  It wasn't magnificent but he gave effort the rest of the time.  That's all I ever ask for. 
What was thrilling about it was a) having the opportunity to get in a correction, which is why fun matches are SO important; and b) the fact that Moto understood the correction and the job at hand, and did well after the correction.
Two weeks until our next Obedience trial.  Moto is entered in Open all three days.  I'd like for him to qualify 2 of the 3 days, and enjoy his time in the ring with me all three days.  That is our goal.