As I was playing WSG today I noticed that two people on my team both had the alliance WSG flags at the same time.. At first I thought it was maybe just a client-side glitch for me showing that one of them still had the flag but really they didn't. Anyways, so the first guy scores and the game is 2-0 us. Then a couple second later when the flags "reset" the second guy jumped on the flagged and capped it and it was game.
So, how you do it is as a warlock, you set down your teleporter wherever you'd like..then as click on the flag teleport at the same time. It won't annouce you picking up the flag to the other team and it will leave another flag at the spawn. I'm not sure how many warlocks can do this at once, still testingBut GL!
Btw, I'm sorry if this is a repost but I did look for it and I don't believe it is.