The defender grabbed a late winner for St Mirren which allowed Saints to pull three points clear of Killie and five ahead of bottom side Falkirk with a game in hand over both.
Innes said: "I still have a lot of friends at Kilmarnock but St Mirren pay my wages."
Innes started on the bench and was only thrown into action late in the first half when John Potter limped off with a hamstring strain.
He then went on to have a major influence on the game, scoring the only goal with eight minutes to go before hooking a Mehdi Taouil effort off the line in injury time.
Jefferies said: "When we got our chance it was Innes who kicked it off the line so he has been very handy for them."