if you just testing, then leave it in and just disconnect one side. takes no time at all that way and disables the bar. then reconnect it after a session on the track and compare back to back.
i run a stock sway bar up front in mine and no bar in the rear. works well for me. I personally didnt like the feeling of no front bar but that was on my set up, all set ups are different pretty much.
deletion of the rear bar has given me so much more control at large angles