"Jab" was what you were searching for. It means a small punch, or to stab at. ("Jab with a needle.")
"Snag" means to get caught up by something. You get snagged with thorns.
Not at all! I haven't worked there so can't speak to their development process, though what I can gather from their public talks is that the way they build AI is among the most advanced/professional.
Thankfully Autopilot is not in charge of explosive bolts
Are explosive bolt more dangerous than a vehicle traveling, say, 60mph ?
In X years, we'll all look back and think it's crazy that humans were allowed to drive vehicles traveling at 60mph.
Explosive bolts are more dangerous when they don't work when they must. That makes them more like the brakes, suspension & steering than the engine & drivetrain.