I hate bears when it comes to ground blinds and trail cameras. I pretty much never let my cams go more than 2 weeks without being inspected now. Usually they're on the ground, or twisted, sometimes just ripped apart. I had one last year that a logger took down before he cut tree down and left it in the stump. I finally found it a couple hundred yards away. That bear came back a couple nights in a row and rolled it around playing with it.
"live and learn, and then catch fish"