I just read the entire thing and this is what stuck out most to me. The last line of the post you're talking about:

    P.S. No-one at the house, including the staff, know that     
    I am nearby. If the police are reading this, do not 
    randomly round up everyone for harboring a fugitive. Please.

This does not read like a serious comment, maybe he turns to humour in times of desperation but this just seems... either it's fabricated or he's taunting the authorities.

Also he mentions in one post he's short on time and internet access but then in the second latest post it states:

   If I am captured, this blog will continue. I have pre-
   written enough material to keep this blog alive for at 
   least a year.

What's the material about? The attempted capture? The murder? His dealings with the government? Surely he hasn't been expecting this for a long and is only now publishing? If that's the case I might be as crazy as to suggest maybe the murder is his attempt at bringing attention to the corruption. If the corruption is proven true and then the murder may be swept aside as part of it, even if he did it to get the attention he thinks the issue needs.