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Further information today appears to back up my thoughts on this.
It's clear from media reports today that Andrew's idea (well actually his legal team's idea, he's too dense to do ideas himself) is to send a written statement - which he has clearly done.
It's also clear that the American side want nothing less than Andrew in person, under oath, and facing questions from their legal experts, and no doubt watching himself hang all over again.
As I said, if a neutral BBC journalist can let him condemn himself entirely with virtually no prompting, imagine what a trained legal pit-bull would do!