I have a 5 year old T2000 that has a similar rear rack. In order to attach the BOB I had to take out the trusty Dremel tool and whittle away some of the bracket. It's quite well supported at that point. There is a piece of metal wrapped around the lower junction point that interferes with the trailer hitch.
I cut a small portion of this away and it allows the forks to slide in and drop on the skewer. Depending how much you are willing to remove (or not), you may have to lift the rear of the bike to fit the trailer.
I've used the loaded BOB for thousands of kilometres with no problems. The factory rack about 25,000 kms of tours, groceries, bags of fertilizer and general abuse. So far I see no signs of deformation or metal fatigue.
I guess you need to decide your next step.