" it says on the NYU website that you can be released from the ED agreement if you didn’t get enough financial aid."
It does not say this. It says If you are awarded a financial aid package that does not meet enough of your financial need to allow you to attend.
Since they meet 100% of need, this is highly unlikely.
You wanted to get in so bad you gambled and it’s a great acceptance.
Enjoy your 4 years - living in the big apple is like no other experience.