anyone else ever had your OCD suddenly vanish and been unable to figure out why?

For the past five months i've been dealing with anxiety, much of it related to OCD(especially when it comes to hand-washing to avoid germs, it got to the point that one of my hands got really dry until I learned to chill out with the water temperature)it started when I found mice and mice droppings in my kitchen so I was worried about hantavirus(definitely glad I got that concern out of my system before most of the rest of the world found out about the virus after that whole cruise ship outbreak)and ever since then it's been one worry after another, some of it due to bad luck(like my state somehow getting more tornadoes then any other state despite us historically not getting hit by them very often, had to deal with a tornado warning a couple of nights so that was unpleasant, luckily nothing happened)and some of it due to my own mind overreacting(freaking out over the possibility of getting sick from accidentally ingesting some rainwater). Some days were better then others, but then suddenly a few days ago after I listened to Insane Clown Posse's Pass Me By after another freakout, suddenly my fight-or-flight anxiety was just gone. Ever since then i've never had another panic-induced freakout that lasted for hours and i'm not constantly worried about stuff anymore. I still do get concerned about stuff and I still do have some of my OCD habits(I.E. not wanting to put plates of food on the counter because that's where the mice had left droppings in the past even though it's been months since i've seen any evidence of mice in the house)but overall I haven't had any major freak-outs since then, it's like my mind refuses to let me spiral again, not sure if it was that particular song putting my mind at ease or what(it's a song i've listened to a number of times before, but for whatever reason this time it put my mind at ease)but I'm enjoying not being constantly panicked over random stuff and I hope to maintain it. I feel like my old self again for the first time in a while and i'm determined to enjoy it and make the most of it.

Curious if anyone else on here has ever gone through something like this and had your anxiety/OCD just vanish out of nowhere(or at least be greatly reduced)without much explanation?