Lawyer up and sue your employer.
They can't just keep you in limbo without cause or with no reason to keep you from returning to work because they feel like it.
About 10 years ago when I did have an employer I was let go from a large company and at the time I had been with the company for a few years, I was let go without any sort of severance package and the main reason they let me go was that they were taking someone elses word over mine without any cause, I was fired so I turned around and hired a lawyer, my lawyer was charging $250/hr at the time and I paid my lawyer about $15000 in total.
My former employer eventually settled out of court after a few months, I got a nice 6 figure payment out of it, and at the time I was in my mid 20's so I took a year off from work and just relaxed.
The lawyers will either charge you hourly or try to cut a settlement percentage with you if you have a real case. Figure out how much money you are likely to get out of your employer and do the math see which way is better for you but if paying hourly expect to pay $10000-20000. Most firms will take a retainer and clear the rest of the amount when settlement is done and retainers are usually 20-30% of total amount.