Turn left onto main road, swing right into Beeches Road, turn round, and exit Beeches Road left ( there is a keep clear area on the road,) so they always let you out, and in less than a minute you are back on track for the A12.
Or turn left, go up to Writtel Road, turn left into Writtel Road past the Crematorium, up to BBC Essex corner, the turn right or left, which ever suits you best.
I always use option one and it's a lot quicker than trying to turn right.