Well, I own a grooming shop, and I can tell you it's no fun whatsoever trying to groom one of those "furry chainsaws". At least you are not blaming the groomer, thank you. Some people do.

Sometimes it helps if you stay with your dog during his groom, if he listens to you and no one else. Or you could muzzle him before bringing him into the grooming shop. Of course, if he fights and flops too much too handle, a muzzle doesn't always help.

Good luck.