Getting pushed into an overflow server and attending an event for almost 3 hours just to be disconnected fom Anet server on the final push is definitely not how an event should be working…especially if you are only running it one time on that day. This happened to my entire party and on return each of us was not able to join the others and lost access to the chest, I still enjoy GW2 but this is a seriously flawed system.
I was in this exact scenario, came back in, and ended up in the same overflow server when the kill happened only to DC while moving to the chest…unacceptable.