Dude, no matter how much you may dislike or not care about somebody...disrespecting the dead isn't really cool.
Just leave him be, what's done is done and nothing any of you could possibly say will change anything that's happened.
Not true in the slightest, if you disrespect someone during life openly and are truthful about it, disrespecting them when they are thus deceased is a far more respectable feat than being a two-bit hypocrite and jumping on the "lets pretend we care" bandwagon.
I agree that when you're dead, its not like it matters if someone disrespects you or not. Respecting the dead is more out of respect for the families who have obviously suffered a great and disheartening loss.
Not like any of the Ledger clan are lurking around on COBOT, but still, you know what I mean.