The people with whom I'm debating are not even concerning themselves with the re-entry yet... just the original substitution, which they think can be made 3,4,5 batting cycles into the future...
Strangely enough, I believe 1 small change (or even an addition) in the rationale explanation would clarify things immensely:
Projected substitutions, i.e., substitutions reported if the player to be substituted for continues to participate after the change is reported (running, batting, playing defense), will continue not to be allowed.