Yea it does look to be what you mentioned (magnasteer plug). Looked it up on google and seems to look the same. is that normal or matter much then?
I did also notice this issue happened once before but the car didint die. RPM dropped to 0 and some other lights went on (tcs i beleive?) a few months ago but hadnt had the same thing happen since. With the current stalling i havnt seen the rpm drop to 0 yet. Each time i've had to restart it; it was pretty quick to come back up thankfully so far