A quick check of the trusty old Scottish Football League Review gives the following.
9th May 1991 Fir Park
Motherwell 1-2 Dundee Utd
Scorers: McGrillen;Welsh,Connolly
Motherwell: Ainslie;Tannock(Brown),Boyd,Dolan,Paterson,McLean,Bryce(O'Neill),McLeod,Cusack,Reilly,McGrillen
Dundee Utd:
Thomson;Cleland,Steinmann,Johnson,Welsh,Narey,Connolly,Bowman,O'Neill,Paatelainen,Preston.Subs not used: Bollan and Dailly
Ref. C.L.Ross(Edinburgh). Att: 1,600
Dundee Utd put out a strong side,certainly in midfield in attack. What happened to Stevie Bryce after leaving Motherwell,I seem to recall him being quite highly rated or am I imagining things.