i totaly agree with it not matching his character, i doesn't make sense that he was weak and begging in the end nor that snape could even kill himm. in the order of the phoenix book #5 that battle between voldermort and dumbledore is magic crazy , they both do really strong magic and in the end voldermort is forced to run for it, yet snape simply does that avada kerdarva curse and kills him!!!that's saying that snape is even more powerful then the dark lord and don't reply that was a strong curse because voldermort threw it at harry and dumbledore and dumbledore manage to block it with objects, and as far as him dying from being weak it still doesn't really add up with dumbledores character and how powerful he was. this is why dumbledore is probably coming back in some form or another in the seventh book. and in the battle in #5 doesn't fawkes show up and eat this snake curse that voldermort throws, and remains alive why could fawkes show up again and save dumbledore from snape, he was weak but he could stiil think enough to call fawkes to save him.