You'll probably have to clarify a bit more for a better response.
Many of us have not encountered such a transition and the time where I went permanent, I was not aware of any transition fees or a "broker fee". What is this fee? Assumption is that it is something your travel agency is seeking from the hospital. Are they allowed to seek this fee as per your contract? What specifically does your contract say regarding the fee? What does the contract say between the hospital and the travel company? This sounds like an issue not involving you, but rather, the hospital and travel company. Have you talked to the person at the hospital who is making this transition? We just need a ton more info to know what your situation might be.
I am not sure you can go back now that your travel company is "in the loop", but I would have simply told the travel company that I wanted to stop traveling for awhile. Then if I choose to hire on to a hospital on a perm. basis, it is none of their business and how would they possibly know?
David
http://travelnursesbible.com