I'm still betting its a damaged stylus. That's not teh same as stylus wear which happens over time. Its usually teh result of sudden unintentional stress to the stylus. Something as simple as lowering onto a record too fast for example.
Examination with a magnifying glass by a trained eye might determine something if present but the only real way to know is to try a different stylus which assuming stylus is not easily replaced/removed a different cart with stylus for comparison. A spare cart to use when needed is standard equipment if one wants to be able to assure continued listening when a cart and or stylus related problem occurs.
Styly are very fragile devices. Over the years, and having worked with many tables and carts over teh years, I'd estimate that vast majority of issues relating to distorted phono sound tend to be stylus related, either sudden damage, wear over time, or both.
Examination with a magnifying glass by a trained eye might determine something if present but the only real way to know is to try a different stylus which assuming stylus is not easily replaced/removed a different cart with stylus for comparison. A spare cart to use when needed is standard equipment if one wants to be able to assure continued listening when a cart and or stylus related problem occurs.
Styly are very fragile devices. Over the years, and having worked with many tables and carts over teh years, I'd estimate that vast majority of issues relating to distorted phono sound tend to be stylus related, either sudden damage, wear over time, or both.

