Broadfoot moved to Rangers under freedom of contract in 2007 after five seasons with St Mirren.
St Mirren seemed content to kill the game, holding on to their lead comfortably by half-time.
Former Celtic, Dunfermline, Livingston, Motherwell and St Mirren Davie Hay had been interviewed for the vacancy.
Celtic can reduce Rangers' lead to one when they meet St Mirren in Paisley on Sunday.
St Mirren looked listless until they pulled a goal back 10 minutes before the break.
Researchers say they were left "dumb founded" when one Scot asked if it was St Mirren.
Dundee United host Hearts, St Mirren visit Hibernian and Hamilton Academical are at Kilmarnock's Rugby Park.
Dame Helen Mirren will also be honoured this year by the European Film Academy.
Motherwell's match against Hibernian and Gretna's game with St Mirren had already been postponed.
St Mirren substitute Sean Lynch was denied a second equaliser by Kilmarnock goalkeeper Cammy Bell.
And with just seven minutes on the clock St Mirren took the lead through Dorman.
Even nine men in blue jerseys were too much for St Mirren a year ago.
The midfielder sprinted in on goal but Kovacevic's well-timed tackle denied St Mirren the opening goal.
St Mirren will only be due compensation should the striker sign for another Scottish club.
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British actress Dame Helen Mirren will also receive an honorary award for her achievement in world cinema.
The movie, starring Al Pacino, focuses on his relationship with his defence lawyer, played by Helen Mirren.
BBC: Phil Spector film picketed by Lana Clarkson's publicist
Aberdeen pressed for a second against a jaded-looking St Mirren with Aluko flashing two efforts just wide.
The actor played Ariel in Julie Taymor's recent film adaptation of The Tempest opposite Dame Helen Mirren.
Despite Hitchcock's well-known infatuation for his leading ladies, Mirren believes Hitchcock and Reville had a solid marriage.
So last week, Forest Whitaker got raves as Idi Amin, and now Helen Mirren for Queen Elizabeth.
NPR: Summary Judgment: 'The Departed,' 'Employee of the Month,' 'The Queen'
Combe, formerly of St Mirren and Dundee United, has impressed since moving to Kilmarnock from Bradford City.
BBC: SPORT | Football | Internationals | Scotland call for keeper Combe
Even so, St Mirren had not threatened goalkeeper Mark Brown until they went ahead after 60 minutes.
His son Charlie plays for Scotland and Stoke City and his other son, Grant, for St Mirren.
Soon enough Helen Mirren, appeared on stage to introduce The Kings Speech as a nominee for best picture.
Mirren took time out her precious allotted minutes for a shout-out to all the women in the room.
"It's becoming the referees who are influencing games, " said Smith after his side's 3-1 win over St Mirren.
BBC: Rangers manager Walter Smith weary of referee criticism
St Mirren had also stated that they had booked a team holiday and would therefore oppose any change.
Meanwhile, St Mirren have invited Brewster to train with them but admit they are unlikely to sign him.
St Mirren enjoyed the lion's share of the possession and Dorman deservedly restored their lead on 79 minutes.
Lennon departed the Fife club to join St Mirren earlier this month, having steered them into Division One.
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