I don't think the CLB fixes a locked column, only prevents it from happening.
I've heard that people have been successful getting it free by jerking the wheel violently left and right to free up the mechanism. Do that with the key OUT. I believe they were probably pissed at the time, and surprised when that worked......
But evidently it HAS worked for a number of people.
Also, in some cases the battery being weak has caused the problem, and replacing the battery fixed the problem.