is the exit lane a dual carriageway with 2 lanes? if so you could legally go ahead from either lane. just make sure when you indicate to come off you are absolutely sure some div is not trying to go around the RA in the outside lane! indicating as in the post above. if not, left lane would be the "legal" lane. but you are on the bike! faster then all the other drivers, i would overtake the lot
paying attention when coming off!
If and when the "dead" exit becomes alive again, the current exit should be treated as a right turn.