So you think it was a hack then? because he was able to leap over and set a bomb on the door
It was not a hack... the poster above you is incorrect.
There is no force field in the middle of either side and if a player is standing on the edge not only can a warrior leap to the player on the other side if the bridges still are not down but a defending sorc can also pull a player back to help defend the bridge nodes.
In the end... working as intended. Well maybe not... but it's fine. You have to stand RIGHT on the edge for it to work so either a dumb player looking for a good view was too close or it was a player looking for a friendly pull back the to defending side that got taken advantage of.
Either way.... nothing special. Nothing game breaking.