Do I have alternatives for relocation agreement payback and payback amount?

I am employed by a company and have been for exactly one year. Relocating to the new location has not been good. My wife has been unable to find work and my son started college. The net effect is that I have drained the bonuses the company gave me to relocate as well as my own savings. I am forced to look for work in a new location. Thinking I had paid my debt to the company by being employed for one, I took a job with a new employer. My company then said that I was liable to the company for $83,000 because I am leaving within one year from the time that they PAID to me. After looking at the agreement, it does read accordingly to their interpretation. There is no sliding schedule and I am not being given any credit for the year that I did work there. They want all signing bonuses, relocation expenses, temporary living expenses, and grossed up tax money.

Do I have any alternatives?