Not that I have any knowledge but I think Jim is the sort to let the fanbase know if he was unduly frustrated by the owners, so that pressure could be applied to release funds.
I would hope Jim and the owners (or some of the owners.. one or two are detached from the club and do not bother I believe?) have long ago laid down the path back to the football league, in terms of wages and costs and timescales and other necessities.
So (wishful thinking?) maybe Jim held out a hope that more of the squad would be able to make the step up this season and that a rebuild would be small.
Perhaps now he sees that this a more full rebuild is required and therefore extra year on the plan back to where we belong?
Total speculation! At the moment I cannot imagine a County without Jim at the helm, so am choosing not to go down that route!