Can Misaligned C2 Cause Recurring Episodes Of Imbalance?

I am experiencing poor balance similar to what I have experienced in the past. (Two years ago a PT found my c2 rotated and tilted. She manipulated it back into place and after a several visits my balance was improved)
Currently, I been having moments that come and go where my lack of balance is severe, coupled with diminished brain function particularly my ability to communicate. I went to the ER; blood work came back normal.
Most of the day a feel slightly unsteady and have to really focus to communicate. Every once in a while I get real bad as described above.
Is it possible for a misaligned c2 could impair my brain function?