I had the same experience when that same part on the right bent/shifted and wound up in contact with my voltage regulator when all my bike did was tip over in the driveway.
In my opinion, those two pieces and that clamp on the tube they attach to are the weak link in the HT guard system. Unfortunately, they're also crucial and they don't seem to do very well if the bike is moving forward or backward at the time it tips over. They just don't seem designed to handle that kind of stress without bending or shifting.
But, like mine, yours sustained damage with a simple, low-speed tip-over while the bike was not in motion.
My damage wasn't as bad as yours. I'm not a metallurgist, but I would assume that once it's been bent and you have to bend it back, it's not going to be as strong. I think I'd try to get them to replace it with a new bar if I were you.
I've got a friend with a welding shop and I thought about having him reinforce them with another layer of steel, but they just barely clear some components/wires as they are: I don't think you could even get them in there if they were thicker.
I make it no secret that I'm not a big fan of these bars. I will admit, they've probably saved my plastic on a couple of occasions, but I still think of all the available bars, these get the lowest rankings for design and construction due to their passing through in close proximity to some vital components. It seems like in some cases, they could actually do more harm than good although I've never heard of any.
Just my .02 and your tale seems to parallel my experience with these bars. I will keep using mine as I've already got them and can't really justify replacing them, but I've learned that whenever I tip my KLR over, the first thing I do is start scrutinizing the guards to make sure everything is as it should be.