I know I will have night mares if I say this. Specially after watching a girl at a cue shop using a bench grinder to sand a tip on a UTube video. Its one way if you are very careful.
At least to get the bulk of it off so you can sand the rest of the way.
Sanding by hand is the least dangerous. I doubt that a cutting tip of a tip tool will do it for you.
Unless you have a repairman in handy distance, happy sanding and good luck.
BTW, its a safe bet that if you are doing any sanding by the ferrule, to do a wrap of painters tape under the tip.