Add to our part in him getting the job, it was also suggested at the time that a goal by a signing from Saints, Danny Wallace, in the FA Cup 3rd round (against either Forest or Oldham) kept him in a job at a time the vultures were staring to circle, they won the FA Cup, and that was the start of it.
I also remember an unspectacular 2-2 at OT, in c1988, when Graham Baker scored with a 'hit and hope' that dropped from a great height, for one of Ferguson's signings, Jim Leighton to fumble.