(a) If a cause of action accrues against any person who is out of the Virgin Islands or concealed therein, such action may be commenced within the terms herein respectively limited, after the return of such person into the Virgin Islands, or the end of his concealment.
(b) If, after a cause of action accrues, any person departs from and resides out of the Virgin Islands, or conceals himself, the time of his absence or concealment shall not be computed as any part of the time limited for the commencement of such action.