They probably changed the lag then.
I had such lags all the time in the beta, but I learned pretty fast that the system didnt allow me to take more damage while I lag (at least not from monsters I engaged. So I simply went to a safe spot (while still lagging) and waited there until the lag passed (I probably always ran out of the aggro range of the engaged monster, like you do when you simply run away). I could even stand right before monsters while I lagged and do /chicken, /laugh etc for a while, and I still didnt get aggro when the lag was gone.
I should get my copy tomorrow. Lets hope the lag wont be as bad then.
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I'm not... gonna... cry... you... dumb... doo-doo brain!
I have given up on waiting for BIS to come back to their senses and do a real ArmA 2 successor.