You could but depending on the state you would need to prove that you actually did it, paid for it and have paperwork to back up why you kept part of the deposit.

What paperwork is needed?

what about me meeting all the requirements prior to me closing and checked my credit 4 times which was hard inquiries all the pain and suffering that it has caused me since 2016 i have paper work and emails i just need help with the situation not the car.

And, why can't he sign the sale paperwork by himself as joint owner?

This is NOT ideal as it involves additional paper work and fees needed to modify LLC/Operating agreements .

My research shows me it could take 120-160 days to refinance, lots of paperwork, need good credit score, etc.Anyone want to speak to this?

Take your time and ask all the questions you need to and maybe bring in an attorney if you're still not sure, to review the paperwork.

I use Cozy and Facebook to list rentals, then use BP leases for may paperwork, and cozy for rent collection and maintenance requests.

Simply give them the option of ending it a month early if they want too and sign paperwork indication you both agree. 

Just take your lease paperwork and make the term 30 days.