Team Race call C2 deals with this exact situation (the calls are interpretations of the rules by ISAF and are treated as rules).
The Call Books, Case Book, and Appeals Book are not rules and cannot be treated as such. They are, however, authoritative interpretations of the rules.
The Team Racing Call Book also only applies to team racing, which is not the case here. In this particular instance though, the rule application is the same.
Regards,
Eric
