Bomber,
Circumstancial evidence to be fair. BBB's post was a straight copy of something on a
secure BA server and posted here very shortly after it appeared there. The reason for my suspicion is a combination of the fact that BBB has only made one post and that he didn't make any sort of comment about the post or it's origin. Almost as if it was his own words.
Most regular posters on Prune will acknowledge that you can usually spot a BA line pilot a mile off and BBB almost certainly isn't one. You have to be one or the other in order to have had access to that statement at that time.
Remember on previous threads, there've been a few "multiple identity" BA managers posting and agreeing with themselves.