I took our Chow to the groomer for a bear clip every Spring-he had the hair from hell, too which was a magnet for burrs and thorn bush twigs that stuck tight, just like you are describing. His lovely double coat of fur always grew back by the time it was getting cold, and he was so much happier to be cooler in summer-Jules will probably love it, too.
Fortunately, Huskies’ fur doesn’t mat-the top coat and under coat are incredibly thick, but not long, like a Chow’s, so no need for a Spring shavedown-just combing out the shed fur every day, till about October...
I’ve never seen a shaved cav so it makes me a bit nervous, but I know he will be more comfortable. When I was waiting for chan to be drained the week before last, someone at the vet had a Sussex spaniel which had been shaved, so I started thinking more about it.