2. No, why would it have been removed?
Ooops, I meant that the Opposed marker was removed from the MOVING ship (as per the rule two bullets above the blue box). So the MOVING ship might be Opposed by enemy ships other than the target ship, in which case their markers would stay.
If a ship is Opposed by multiple ships, are the DRMs cumulative or is it just -1 for being 'Opposed'?