Honestly, I'm not 100% sure.
I went in to TSE to drop it off and have them look at it. James told me some options as to how to fix it that made little sense to me. I shrugged my shoulders, he said something about peening(sp?) the sight and securing it with locktite & took it into the back. Came back out, applied purple locktite, tapped the sight back into place with a hammer and some little punch looking tool and handed me my pistol.
I could be wrong about how it was done, but it took 10 minutes, there isn't a mark on the pistol or sight, no traces of adhesive, the sight no longer wiggles and it shoots as good as it ever did.