Cobber

You didn’t have to remove the fob from the key ring, if only makes a difference when it’s buttons are pressed, it has no bearing whatsoever if it’s merely within close proximity.

I t think that perhaps you are reading a bit too much into this misfire business. A small burp and fart on the overrun is no great problem, if it were to sound like a shotgun going off then that should be a matter of concern.
So the question is does it sound like a 12 gauge shotie going off next to your ear? or is it more like a minor bowl growl in the underpants?
If it’s the former then you most likely have a problem, or if it’s the latter bottom burp then relax sit back an enjoy the car.and it’s idiosyncrasies.