Sorry to see the damage to the crab, Grey. I can sympathize with your problem. Bears, particularly young ones, will damage things just out of curiosity. They like to reach up, reach in, swat things around, etc. Our camp is in heavy bear country, and after watching many bears over the years, it's usually the younger ones that do most of the damage. When bears reach up in apple or crab trees before fruit can develop, it's usually investigating or maybe marking the tree ( as bears will do ) like deer lick branches and make rubs & scrapes. It's not for food that isn't even there yet.
As for pears, the sugar content in them will bring bears in by the swarm !! One of our members brought about 4 bushels of them to camp about 15 years ago that he raked up in his yard. It was in September and he figured something would eat them - better than throwing them out for the trash man to haul away. Well, the bears wouldn't leave them alone for any length of time. The pears were hammered in 2 days. So if you think pears aren't going to attract bears ....... think again !!
We're fortunate to have enough acreage to plant plots of corn each year, and that helps keep bears' attention off the apple trees. Having loads of oaks that put down tons of acorns also helps. The fat calories in acorns becomes the biggest draw for bears in the fall, beside the corn.
One of the reasons we planted so many apples and crabs the last 5 years is because we figured we may lose a few to bear damage. Our choice of B-118 and Antonovka rootstocks was to grow larger trees with heavier wood to survive a bear climbing in them once they start to produce quantities of fruit. Hopefully, the corn plots and tons of acorns will let the apple trees get to a size that will let them stay viable after a bear visit.