It's not the first time Kerkar has done this - St. Johnstone agreed a deal with him recently but he turned it down, claiming his wife didn't want to come to Scotland. It seems she hasn't changed her mind.
Kerkar impressed as a trialist against Derby County and it was thought the former Clyde and Dundee United man would be a decent signing. Clearly he sees his future somewhere else.
Story source: The Official St. Mirren Website