Are you sure you aren't thinking of the alleged problem of the tab breaking off the recoil spring plug on the Colt Officers ACP? If that happens it WILL launch the spring and plug downrange, but I'm a member on both of the major 1911 forums (M1911.org and 1911forum.com) and I can't recall anyone ever posting that the end of the plug breaks off and things go flying with a full-size Government model.
As to the tab shearing off on the Officers ACP, I think we've pretty much concluded (at least I have) that it most likely happens if a replacement recoil spring is too long and "stacks" before the slide can fully retract.
No, it was the standard, full length 1911 in which he reported that he had several that brought to his shop for that reason. As for the Officer's model, I had one of those and after hearing that the tab could break-off, I was concerned with how little metal was actually holding the recoil spring plug and how it had a 90 degree angle that would likely give a crack a place to start, I swapped it out with one of the upgrades from Brownell's that offered more support and it never developed any problems.
Nevertheless, I am sure that you are aware that a single person's experience with the 1911 is too small of a sample to be statistically significant.