In my case, I don't buy it being a grip issue. I shoot other folks' Glocks frequently and have never had a lock-open failure. As mentioned in my earlier post, other Glock shooters tried my pistol and experienced the same failures then went back to their own Glocks and did not have an issue. Similarly, I experienced lock-open issues with my Glock but when using other Glocks (all G17s) experienced no issues. All of this with all guns using the same Commercial ammo.
While I don't dispute that limp wristing is a possible source of problems in some situations, I can't see it being a credible explanation for what I am experiencing currently.