remove SelfControl app
If you're impatient about letting the clock run out, check your calendar and alerts for the next 24 hrs and jot down anything important during that time.

quit SelfControl

Go into System Preferences, date and time, and sign in your password to unlock. Advance the date one day, and relock everything. SC's timer goes strictly by the system clock.

Start up SC again. You'll get timer at all zero's (SC thinks it's tomorrow [and so will everything else on your machine, which is why you want to check time-sensitive things beforehand] ) and likely a message 'stuck?' or something like that. un-stuck it. Now you'll get the standard timer selection. You can set it for the minimum--15 minutes--and let it run out again, to get a more graceful time-out. Now you can go into your blocklist and delete everything there, start it up again for 15 minutes and run it out. In fact I recommend you delete everything there, because selfcontrol can really crap your system, especially when you have other blocking elements (system security blocking, lulu, etc.) competing.

( I wound up with Safari, Chrome, Skype blocked which I had nothing to do with, and were never in the blocklist (I checked the plist manually; there was nothing but n.c.h .c.o.m sites: I got SC specifically for stopping n.c.h apps from phoning home.) I couldn't wait 24 hours, Skype and a browser are an essential for me. )

From there you can decide whether to delete SC altogether and be done with it. Wharton School absolutely recommends having nothing to do with it in the first place, and gives 5 very good reasons why.