A costly handball stung St Mirren for the second game in a row as more Premiership points were spilled at Pittodrie.
The Buddies were holding their own against Aberdeen before Declan Gallagher was given his marching orders after handling in the box, with the Dons netting the opener from the penalty spot - just as Motherwell had six days earlier.
Bojan Miovski blasted the hosts in front, before quickly making it two after pouncing to beat Saints keeper Trevor Carson to a deflected cross at the near post.
