I hope these help shed some insight into the inquiry. Player was in tribe. Player went barb. Support was not sent home from villages, but instead stayed as support.
I've seen a handful of reports from others in my tribe the past month of them hitting stacks in barbs and such.
I understand sometimes these players that quit will have troops in their villages that must be cleared, but as to the support function the troops should be sent home due to non compliance of the "same tribe" requirement.