Until recently, it was not the case that everyone sits in the EBG and is afraid to leave it, because otherwise it will not be possible to return to the EBG. This is a point of view to wvw devs....
Whoever makes the troll help call, can only do it once. Next time he should already be on the block list.
But there are other methods. For example, the EBG tag goes to borderlands to "defend" something. Staying there until borderland can also que. Then the tag sneaks back to EBG with the players it needs.