Remember that those who are expelled (I hate that DF term) are considered as 'no longer Jehovah's Witnesses'. Therefore, how can the rules of Jehovah's Witnesses apply to people who are no longer Witnesses? If a person is seeking reinstatement, though, probably the elders would make issue with their associating with a person who had been expelled. They'd probably tell them to shun said person if they wanted to stand a chance at reinstatement. Because coming back in means submitting oneself to the rules again. But in that midpoint, like, at a time when you've got no shot at reinstatement in their eyes, nah, they wouldn't care.
--sd-7