I can sympathize...I leveled some jobs that I truly didnt want to simply because I wanted that clean profile.

Unfortunately I just might have just did that with SAM/PLD (51/61) so I'll be taking those to 60/70 respectively, because I cant stand to look at my job list like that.

But yes, as most have said, unfortunately there is no way to de-level or reset class progress (although that might be nice if people wanted to re-live/re-learn that story from the start). The only options are to roll a new character or level it to a number that doesn't trigger you.