Good question. Awaiting an answer, Id like to know my self. Even thought I am not spending olives for that part of the event.

It is the twin that has the trading disabled not the original.

The danger in what you are considering is guaranteeing the return, but technically you are not breaching any current rules.  However, as with all trades and loans of that nature you would be entirely responsible for the risk of the other player not returning the sailor you loaned for that purpose.  

would you olso be allowed to twin a bo ??? 

Negative, after I spend over $5000 on olives I realise I cannot clone BO and event is lost for me. Probably end up twinning my EBVE radio man and disbanding it.

awsome thnx for the update :P just neded to know for sure :P 
not that i would get near the posibility of getting twin but you never know :P