Again, I'm on the side of this being one of the least likely scenarios I've seen. That said, if Jobs were involved, I would think the latest a changeover would occur would be 2006, when Eisner's contract ran out.
If Eisner really did feel threatened by the Disney/Gold/Jobs possibility, he might agree to step down sooner in order to go out on "his terms" and to get Jobs on board. In that case, Disney/Gold's objective would at least partially be accomplished.
Think about it... Eisner silences many critics by not only continuing the Pixar relationship, but making it closer than ever, possibly even bringing the whole crew over to Disney, Lasseter included. He then rides off into the sunset, with a golden saddle of course. Certainly there are worse ways for this to end for him.
Really, from an outside pov, any scenario that results in Eisner stepping down early, and especially one that puts a Disney/Gold supported CEO in place, has to be considered at least a partial victory.