Title says it all, I think.
I accidentally checked the box on this question.
Yes—community moderators, at their discretion, can now remove community wiki status from particular posts.
This also inoculates those specific posts from ever being auto-converted to community wiki again, so they can be edited indefinitely with no forced wiki.
In general, we feel the current automatic "force community wiki" thresholds are correct:
However, if you feel your post has been unfairly converted to community wiki and deserves special treatment, you can flag it for moderator attention and plead your case to a community moderator.