according to the guidelines in germany/europe a statin therapy is a MUST in your case, if there are deposits/plaques in the coronary arteries. the aim of the treatment is a LDL-value beneath 100, if possible beneath 70.,on condition that you can tolerate the medication. it is quite interesting to read,that you were allowed to stop the oral anticoagulation (and the metropolol) after the ablation. as I already wrote in this forum, I had a mitralvalve repair, together with a surgical ablation around the pulmonal veins. yesterday I visited my cardiologist for a check (4 months after the operation).mitral valve function is excellent, so far I had no A-Fib. I had a discussion with him about my suggestion to stop the Xarelto treatment. He didn't like the idea. his advice is to continue , because the recurrence rate of A-Fib is high and I may not notice it, for example during the night. moreover I remain a "high-risk" patient because of my age (70) and I am a woman. of course I can decide to stop Xarelto, , but this a very difficult decision. you didn't mention your age .if you are young, maybe there is a different opinion.
(by the way, I take also a statin,although my arteries are completely free, even the coronary arteries).