Help with bleaching hair?

I have naturally light brown hair. Ive had it platinum blonde/white for about a year. About two weeks ago I dyed it with jerome russells punky colors and its hot pink. I want to go back to blonde, get the pink out because it hasnt washed out at ALL and I miss being blonde. Obviously its going to damage it, but should I do something like color oops or bleach it back? It should only take two mins of bleaching to get it blonde, but will it COMPLETELY fry it? Sorry for the long description. Help!