Applied to the school of Business and thinking that was bad choice. Any chance you can get denied from the business school, and re-apply for undecided as regular decision?
A denial ED/EA is a denial for the entire admissions cycle.
I got deferred 
What are you planning on majoring in? You applied to the business school first, so that means you want to major in a a business related field. Because you are deferred, you shouldn’t switch to a different school, because you already applied to Business.
I read on this board somewhere that someone switched from VSB to arts and sicences and got in.
You should try and contact that student.