So much ignorance of how network communications actually work going on in this thread.
Someone using a 'lag switch' would not benefit from it. The game would rubber band you back to the position you were at when you re-sync. Using it to avoid envrionmental damage or 'pass the ball after dieing' would not work either - these are things that the server controls. If the server thinks your dead, it automatically handles the ball being transferred, and any packets from a lagged client saying "Hey I'm passing the ball" are ignored (Server: Lol nope, you're dead son). Claims of this happening could be from passes being mid-air while the carrier dies (and could also be combined with the known bug of the pass circle not showing up, but rewatching this on video will clearly show the beacon of light over the carrier disappearing before they die, showing a pass).
Similarly, lagging yourself out in a fire trap would not help as the server would know where you are and still apply the damage, and your death.
Also, the 'lag attack' that you guys commonly see, the one which affects your framerates, is occured by the server loading a new instance of the warzone for another group of players. This has been noticed if you are the center of huttball at the time, you'll see a bunch of nametags pop up for a few seconds during the lag, then disappear. It also shows up in Novare, right in the center of the map where the speed boost is. Your client is loading, and then unloading the profiles of all these players. Why the system bothers sending this information to a completely different instance is just another case of this game's horribly inefficient coding.
Source: I'm a coder on an MMORPG Project.
Raw thank you for that explaination few people can get on here and give articulate responses, however the "lag throttles" or whatever you want to call them exsist. It is common knowledge, and on our server(shadowlands) are quite rampant. My headcount currently stands at 32 toons that are banned or suspended. The vast majority for exatly these things other players are commenting about in this thread. I even heard unsubstatiated rumors of entire republic guilds being investigated for their rampant use of a variety of hacks including the lag stuff. Since it is apparantly quite easy to utilize this exploit/hack with either 3rd party software or the "print screen" spam. Its use has increased 3 fold in the last month. Please if you notice something odd, and mean odd (please know that certain talents and abilites are quite often confused with hacks). For example the sentinel in denova that can solo cap the south node whilst being dps'd by no less than 4 enemy players, who then force camos and 10 seconds later (not 4), comes out of stealth and lag throttles his damage so that 3 abilities occur at once and essentially one shots you. That's odd. Or the focus guardian that you are 1v1'ing uses resolute to break your force choke and after some good ole fashioned smashing on both sides, insta heals himself to 100% instantly, and after taking a aoe blind uses resolute (2 min cd) immediatly again! That's odd. and this is just since Yesterday!