I took a break from Subeta for around 6 months. I don't remember turning into a clown! Will someone please tell me how to cure it?

Looks like you have a zombie skin. If you go to your wardrobe, go to the skins tab, you can clear your current skin, just save your avie after and you'll be back to a Human self. :)

Ive got it figured out -- thank you so much!

HOw did you get the clown skin?

It's a zombie strain, you can get those during Survival which takes place in February.