oob or ib ?

[Homer]

Whatever.

The rules for volleyball differ quite obviously from the rules for basketball. And, the possession arrow is not applicable to volleyball at all.

"Do overs" are quite acceptable in volleyball under the appropriate circumstance. The rules of volleyball do not include any provisions such as you suggest. Nor, can I see any good reason why they should. If "in" or "out" cannot be definitively determined, a "do over" seems the fairest resolution for both teams.