I've read of only a couple of members having the same issues reoccur some time after the initial carbon build-up recall services being performed. Most don't mention having additional issues thereafter; but it is totally possible.
I purchase my 250 just a few thousand miles after the original owner had the carbon buildup issue. I guess he got scared away so I got the car for a steal. But I havent had any issues in the 25k+ miles ive owned the car