Kenneth's long-range, last-gasp intervention in the Clydesdale Bank Premier League encounter came after he was introduced 20 minutes from time, despite suffering a dead leg in his side's midweek Scottish Cup tie, to add stability to a visiting side that had been reduced to nine men.
The United manager said of the unlikely equaliser: "Garry failed a fitness test at Tannadice at 9am but I told the physio to put him on the bus anyway as we didn't have any other players.
"He did a bit of training on Friday and felt his mobility was restricted, but sometimes needs must, and he was out warming up for the first time when Jon Daly was sent off and we had to use him.
"I didn't expect him to score our goal but make sure that the opposition didn't score - but he struck the ball beautifully. He should do it more often!"