That only works if you don't come to the forum first and tell everyone you're going to have temporary place holder lordships for all those regions.
Maybe Tom is against this but in my mind I don't see this as against the rules because they aren't place holders really, they are expected to do their job as a lord and get the region running well not just sit there and ignore the job like a placeholder. Them stepping down is unenforcable by the realm so it will likely take awhile.