Why would Hal email himself to debug crash logs? Hal received the first ever bitcoin transaction from Satoshi and from a developers point of view it would only make sense to try something (for the first time) by yourself. (perhaps by sending BTC from one address to another). However, the linked emails pretty much make it clear that Hal (RIP) wasn't Satoshi. Unless he had a multiple personality issue and was talking to himself.

Did he know who Satoshi was? Yes, Hal probably did know but he's dead.

http://online.wsj.com/public/resources/documents/finneynakamotoemails.pdf