It's frustrating sure but it's part of the game. It can be dealt with you just have to synchronize your teams supers to take the bubbles down all at once and kill the occupants. Have someone stay back and snipe the GG as they come out of the bubble and while the GG is waiting to re spawn or running back to the orb area you have time to destroy the bubbles without fear of being supered to hell. Also this strategy is very, VERY rarely seen. I've personally only been part of it once and I've never seen the other team use it at all. I've seen half assed attempts that failed miserably but never seen it pulled off successfully. A good team can easily counter.