10 Day old bunny has a slight head tilt and its making him fall over/roll.
A few days after these bunnies were born, one fell out of its nest at about a 5ft drop. It made a yelp or screech which woke me up immediately and I found it on the hardwood floor and it seemed fine so I put it back in the nest. (the bunnies and their mother sleep in my room and its a long story)
About a couple days later, I noticed this bunny was going around in circles and having a tough time staying on its belly side when trying to move. And my first thought was that it could be that disease/virus//thing that makes bunny’s head’s tilt — but the head tilt doesn’t seem that severe at the moment. The bunny is learning to walk as we speak aside from not being able to walk at all a couple days ago. And if anything it seems to have gotten better. But I just want to make sure.
And despite its slight disability, it seems like a healthy bunny. Fully furred, eyes are widening, etc.
So, my question is to you guys. Do you think it could be that ear infection virus thing, or do you think it could be a stiff/sore neck? Or something else? And maybe time will tell, but I’m just stressing about it right now because I don’t necessarily have the money to go to the vet at the moment. 
I will post a video of the bunny and its sibling next to each other when my phone charges.