That Jasper bear may have been the one called Iglace, or Igless, by the free-camp regulars, while they chased him with dogs all round the campground to upset his dining schedule.
Tearing up equipment and making huge messes are usually the worst experiences one will have with a black bear. I have been going to Rainbow Hot Spring in Colorado for years, and never heard of a bear until summer of '99, when one strolled right through our camp. I followed him towards some neighbors about 1/4 mile away, and found they had already been hit. He had sniffed out an opened can of condensed milk, and proceeded from there to make quite a mess before they could run him off.
Returning to my own camp, my girls making dinner had discovered a hole punched in our pint Sigg fuel bottle (heavy aluminum). Then I found two punched and drained cans of juice concentrate.
We had a canned-food bear on our hands! A novice to food-stealing, he completely bypassed all our goodies hanging on trees in backpacks, aside of shredding one cheap poncho.
I guess after a taste of that 3rd can of ours, he decided our tastes were a little too weird for him, and went back to the folks next door.
We left the next day; don't know what may have become of Mr. Bear after.