As a 20+ year vet of the USAF, I was fully involved when the M-9 came on line and replaced the M-15 revolver for standard sidearm qualification. I saw several similar malfunctions. The best was a young Capt. I was shooting with one day. He was a catty-corner shooter - Right Handed, but Left Eye dominant. His stance was kinda' crooked with his head cocked down and to the right. It seemed to work for him....good thing too. When the slide of the M-9 decided to depart the from the rest of the weapon, it missed his eye socket by just the amount of space he tilted his head down to line up his left eye.
Never liked that weapon, and never will like that weapon, despite the fact that I've spent some quality family time over the years wearing one.