Yeah that's right, it wasn't long after Rangers approach. O'Neill had already left though, that would have been half way through Strachan's 1st season, IIRC. I think it was round about March they signed him. We had still to play Celtic before the split that season and Malpas wouldn't play him in the game because he had already signed with them.
They did the same thing with Scott Brown after the split when they had still to play Hibs after the split, but Hibs let Brown play and he scored the winner.