I don't know who was directly handling things at that time, but I saw a taping in December and had to leave early. An ABC page escorted me and my friend to a backstage exit and we passed a dressing room with Mark Goodson's name on the door so maybe he was still directly involved because I don't remember too much comedy during the episode I sat through.
A few weeks ago, we had a thread about how the final
Super Password was a point of demarcation for the genre--to hear Robert Sherman tell it, there was one other way that the end of that show marked the end of an era. As Sherman recalled, Mark Goodson conspicuously "checked out" after
Super Password ended, and he showed up at the office far less often. As far as I know, Jonathan was running things for
Match Game 90, although Sherman and Jonathan agreed on this much when they were talking about other shows--if Mark Goodson was in the studio, it kind of didn't matter who was running the show on paper.