we see a lot of this problem with the larger breeds inside, once we move outside in the summer the problem dissapears............some dogs dont like to be confined in small halls, i have one american cocker i cant take to classes or smaller indoor shows he just acts like i have beaten him with a big stick! out side hes a stunner!....luckily we have all the outdoor companion shows and other shows coming up, once he is confident outsidehe will be better inside!.........my yank is just a whimp! last week he wouldnt go into the kitchen becase my husband had bought in a bag of logs !
good luck at the shows but get out and about to the companion shows for extra practice!
Pauline