[Q] How to uninstall Xposed framework on Lollipop (CM12) topic

I'm on OnePlus One CM12 Nightlies. I'm finding that, as of now (and totally understandably; it's an alpha release) the phone is overall less responsive and laggy after flashing the Xposed framework installer.

will dirty-flashing a nightly effectively remove the framework completely?
If not, what's the simplest way to remove it? Clean flashing? Wiping /system?

Thanks in advance!