When my right bag came off I had just hit a pretty large pothole, it was quite a jolt followed by my right bag flying across 6 lanes of Interstate traffic. I caused quite a few cars to steer out of the way until a pickup truck ran over the bag and got it stuck in his undercarriage. In all 12 cars had to veer out of the way and pull over to the side of the road. It was a real blessing that no one was hurt and that I didn't cause anyone else to have an accident. It took another 30 minutes on the side of the road to get that bag out from under that pickup undercarriage and he was unbelievably kind about the whole thing. I think this is such a big deal to me because I was almost responsible for a lot of damage to other people vehicles. I just can't let that go.
My opinion, and my opinion only! The whole problem is the fork that connects to the passanger peg. During times of heavy body flex (like hitting that pothole) it simply come of that mount and put extra stress on the only locking point in the whole connection. Since that locking point is spring loaded, the force overcomes the spring, the lock pops open and the bag slides right off. In some cases I think the spring pops the lock back closed but only after it has already become dislodged. The 2010 model has a more secure connection at the peg location and I think that is why you see most of the problems on the 2011, which also might be why there is not going to be a 2013 model. I think a simple solution would be to make both of the bag mounts as locking units instead of just one, but that is just my opinion. Until the I use zip ties on all three connection points.