Legal options for forced relocation

I work in an office position in a construction company. Recently my boss informed me I needed go work at a job site for a month. Company policy states that a relocation is considered a temporary relocation if its 30 days or less and less than 60 miles from the home office (where I was hired to work). It also states they are to give me a relocation note if the relocation exceeds the two conditions listed above and I am not to relocate until I receive and sign the note. I am currently past the 30 days allowed by the policy and the site is over 60 miles from the home office fullfilling the two requirements of the policy to require me to be provided with the note stating I am being relocated. Additionally my boss assigned me to this new location without my knowledge or consent and has provided no documentation as required by the policy stating that I am relocated temporarily. Further, my boss has also stated that I am to be on the site for at least 2 additional months, possibly more. My question is, is what has been done to me legal, or should the company/my boss have at least provided me with the opportunity to turn down the relocation so I can be terminated without cause (laid off)? Or, at this point are my only options to stay and hope the assignment ends, be terminated with cause for not being able to relocate, or quit?