Thanks for writing your query.
After reading your post, I would like to advise you that you should get your husband clinically examined.
It seems that his blood pressure might have raised during the episode, resulting in dizziness.
You should lie him down on the bed till the time your doctor arrives.
Also get him investigated for :-
head and neck.
2. Blood pressure monitoring.
He can be given antihypertensives for blood pressure control.
For persistent dizziness
5 mg can be given.
His symptoms will disappear once the blood pressure is controlled.
I hope this is helpful to you.