Hi and thanks for using the forum.
If this is a one time occurance, I think you can wait and see what happens. If this is a recurring symptom then he should ber checked out by a doctor (a neurologist if possible). They will probably want to get some x-rays or scans to see what is going on. It is possible that these symptoms are caused by a disc problem. It would benefit him to be evauluated to see if there is anything wrong. Good luck.