They are a non profit. At most NCSoft would make them stop and sue them for the profits that were made which (assuming they are running the non profit correctly) is 0.
They, NCSoft, could add in their losses. Also 0.
But I'm not even an amatuer about legal stuff. Just a guess.
if the guy from titans network succeds with his negotiations and they have to pay a monthly fee for there licensed fan server, NCSoft could even claim losses
If they do come to an agreement, couldn't Homecoming then lease a licence from them?
depends if NCSoft would license an other Fan server project or the license for Titans allows a sublicense.