Massad Ayoob - who knows more about pistol self-defence and the subsequent court ordeal than you multiplied by me - advises against deactivating the grip safety.
In a nutshell (read his articles and books) he states that deactivating any safety suggests to a jury of non-gun people that you are of a certain, "unsafe/killer/looking for trouble" mindset.
He also advises against using home-loads for self-defence for the same reason.
Of course. And in a strange coincidence, just now, a late night repeat of a "Dateline" episode on NBC. On May 11, 2004, a law abiding, CCW holding, father of 7, met a stranger with a long history of uncontrolled violent behavior, and his two dogs, on a trail outside Mesa, Arizona. A confrontation occured, with no witnesses, and the CCW holder shot and killed the other man. He claimed self defense.
The DA decided to prosecute. Three of the issues the DA brought up at trial, and that jurors interviewed for the TV show took into account, were:
1) he shot him in the chest, instead of trying to "just wound him";
2) he was carrying a 10mm Kimber, a weapon "even more powerful than the police carry"; and
3) he was using Federal Hydrashok hollowpoints, designed "to kill".
We (well, maybe not Mr. Pin The Safety Back, but most of us) understand why these three issues are total BS. But regardless, they were used at trial, and the jurors took them seriously in considering their judgement.
Just imagine the DA's comments if the shooter had dectivated the Kimber's grip safety, making the gun "more deadly, easier to kill with, showing reckless disregard for human life" or whatever BS he would decide to spew.
Shooter was found guilty of second degree murder, and sentenced to ten years in prison.
Mr. Pin The Safety Back, like most internet dispensers of crappy advice, could get someone killed, or imprisoned, if anyone was foolish enough to listen to them.
And the real experts, like Ayoob, will keep on being ignored.
Back when, crappy, dangerous, advice was limited to a few who would listen in person. Now, crappy, dangerous, advice gets diseminated far and wide. One of the downsides of the Internet Age, I suppose.