CJ,
Glad your brother is alive to tell that story. This the third or fourth story like this I've run across which is why, every time I pick up my 1911 I do a quick function test.
Unloaded of course, run the grip safety check, disconnector check, trigger check, click test on the sear, thumb safety etc......takes about a minute to do them all, only then it's loaded, cocked & locked, holstered and out the door....