Originally Posted by
StanSeven
Being afraid is likely causing to lose confidence. Hook the bike up to a trainer and get comfortable with clipping and unclipping. Then practice in an open area like a parking lot. Also make sure the tension adjustment isn't too tight on the pedals. It will become second nature at some point. Just develop the confidence and you'll soon relax and enjoy it.
+1 to all this advice.
I use LOOK pedals (or LOOK clones) on all of my bikes, and they all use the same Delta cleat that I believe is used by the CX-6.
Practice releasing BOTH feet individually AND simultaneously. Realise that you can unclip with an OUTWARD swing in ANY position. You can also unclip by swinging your heel INWARD in the positions from about 11 to 1 o'clock.
THAt being said... I have fallen twice while clipped in.

THe first time was back in the 80's when someone stopped dead in front of me.
THe second was this weekend when my chain came off mid-climb.
And Welcome to Club Tombay. :0