Really? Is he that petty?
That would surprise Martin I guess.

If Bedivere cares more about putting a mortal in his place than he cares for 
- Messagers safety
- a chance at immunity to sunlight
- a truckload of information, including how this strange mortal got all that info.
- what an ancient vampire like Llisana might do

Then that would surprise Martin as well as me, but you should kill him then.
If you do though, its normally the rule in this game you can never end someone jn a single post. Now, I've made a point out of that not being the case here. As Martin is mortal. Butif you do kill him I would like Martin to have a chance at last words.

Also, of course the coffin will explode, as well as some other things, but that won't happen till he's completely dead.