Yes I think he was. Off the top of my head, the Southampton managers that scored points were McMenemy, Pochettino, Pardew, Hoddle, Adkins (I think), Redknapp, Koeman and Strachan. So even someone like Chris Nicholl who managed them for 7-8 years after McMenemy I think would also have been Pointless.
I went for Hinshelwood, Slade and Brady for the Brighton managers. I also had Ian Branfoot, Stuart Gray and Mark Wotte for the Southampton managers. I think all of them were Pointless too.
Hyypia was one of the winning couple's other answers. They were a couple from Liverpool and I guess he was a Red. Would have scored 3 points (one of the rare times Hyypia scored 3 points I know). I suppose as their sample won't have included any Brighton fans, people then will tend to recall the...
Alan Mullery was also a Pointless answer I believe. I think Richard Osman said the only Brighton managers that would have scored any points at all were Sami Hyypia, Peter Taylor, Brian Clough, Gus Poyet, Mark McGhee and Chris Hughton.