I for my part perfectly believe Snape although this may of course seem so because his claim defended me, but as I said it is true. Actually this clue of Hagrids looks very farfetched for me and it really brings him to the top of my suspicions list.
I am not going to vote for him today. I don´t know if the Jester story is true (maybe its Peters plan to not actually help so, so that we get rid of him just because of that) but I see no reason for him lying, when he got 2 two roles right.

Myrtle you might want to tell me how it was possible in such little time to convince you voting for Snape when some hours ago you were completely sure me and him were totally innocent.