Unable to cast Infinity?

Find a buccaneer and ask them to use Time leap. it should reset all cooldowns.

Perhaps when he last logged out, the skill was on cooldown
Now that he logged in and got reset, the skill level was reset, but the cooldown wasn't
so now it's at a negative cooldown value, displaying as zero, and counting ''down'' to infinity, ironically enough.

If that's the case, it should be fixed by any simple SC, as those reset all CDs right?

Time leap worked on the skill, now is working again. I guess it was really counting down to infinity.

Unfortunately there was a few SC's and a patch, but the skill wasn't reset during them.

Thanks for your help all.