I too like a pretty crisp edge and when in a hurry or traveling I use feather de blades. In case you don't know, Feather blades are considered the industries sharpest edges.

In my opinion and experience, I would say that you have:
-Gotten used to a semi-dull razor and have developed pressure issues...using too much pressure of the blade on your skin. Check your angle too.
-Could be that your lather was too watery this time and didn't give you enough cushion...I did this the other day when in a hurry for a dinner date with my wife. My face felt a little tinder.
-Micro chipping is an option, but I haven't had CROX to do this. I have had diamond spray to do it though.