Okay, so while it's not a direct answer, maybe this will hep clear things up.
During the Brotherhood-Dark Hunter War, the Piraka were assigned to defend an old makuta base. During their tenure there, Zakatan found a room underground, which had almost the entirety of Teridax's plans. He had planned out every single possibility, thought out every detail, prepared for every betrayal. I find it very, VERY unlikely he didn't consider this possibility, and even if he didn't, with 1000 or so years to wait, of course he would have planned for that possibility.