Rules question: Mire

[armyduck95]

OK a follow up detailed situation on miring:
1. unit moves from an orchard hex into a marsh hex containing a road. It entered from a non-road hexside.
2. Per earlier discussion, I rolled to mire since the surrounding terrain was marsh before reaching the road... and the unit mired.
3. After 3 marker removals I rolled for mire recovery and it mired again. Since the vehicle is on a marsh/road hex did it have to roll again? My assumption is YES since it did not technically/successfully unmire yet to start road movement.
Does that sound right to you? - just looking for confirmation