Guild Wars 2

2 days ago we breached into garison and started destroying all their siege.our commander and a few others jumped across to the cliff next to the watergate to destroy thier arrow cart while i was waiting to portal them in.when they wanted to jump down back infront of the watergate so i could portal them back to the south east gate where we breached, they got ported(all of them)into the gate itself, where the enemy on the cannon started shootong them.
vid after weird glitch
http://www.youtube.com/watch?v=cdMEWdBReLo&feature=youtu.be

And yesterday i was in longviewtower defending vs 40 nnk.I was standing at the bottom of the ramp in front of lordsroom,gate was closed amd was spamming my attacks at gate, when all of the sudden i was portaled outside of the tower in the middle of them. I wasn’t pulled or anything i was all of the sudden there….
is this a weird glitch or a hack or what is that?(i’ve heard of others having same issue, where they all of the sudden are in a wall where they weren’t even close to)