whole team crash in last room of foundry

ok so i have had this happen many times and im sick of it!!! i have heard of this happening to many groups anet should do something..

in the last room(hard mode) we all lag and cant move use skills or see emenys move(in other terms worse lag ever) but what is werid is the fact i can open trade windows and i can change my armor and it shows the change ....it would not be a big isue if i was only 5 min in run but after 4 hours then this happens

yeah, bloody ridiculous. Anet? the server was 216.107.245.54. Did it crash between 25/Apr/2007 11:25-11:35am (GMT+11)? I tried to ping/tracert to it, nothing!!!
This was a gloom+foundry hard mode dual run and we freaking wasted 4 hours to this sh*t!

We want our 4 titan gems back!