Exclamation [Q] ART not working

Hey guys, I tried switching to ART from dalvik today but unfortunately as soon as it finished booting I cant get past the lockscreen as it keep FCing each time I try to unlock the device. I tried rebooting , tried going to recovery and wiping cache and dalvik, and still the same. How can I fix this or how can I atleast return back to dalvik ?? because I cant even use the phone now.. Please help its urgent

im on the latest carbon rom nightly 4.4.3 and boeffla kernel Omni version beta 6.
Using nova launcher if this matters.
AOSP 4.4.4 or PORTED SAMMY 4.4.2 on my Galaxy S3 i9300
Current ROM: Carbon ROM 4.4.2