If I were a vampire you don't think I had the choice to sit back and let things play out? Instead you believe the vampires would have to kamikaze themselves by trying to get a single person who was already up for a coin toss to be staked? That makes zero sense to me. I could have sat back and just watched Kashta's plan and theory come to life, which was she and you were on opposite sides. She was staked and turned out to be innocent.
Even if I die tonight I will take comfort in knowing that I helped kill two vampires and zero innocents (unless you count the UD). You and Wiz will die tomorrow guaranteed.
As for asking for the priests protection it does not in anyway mean that I will get it. However it will make the vampire team think twice about killing me off if I don't get voted off tonight. It could very well be that the priest does not believe me and protects someone else tonight thus giving him a higher chance of protecting someone if the vampires believe that there is a good chance I will be protected tonight they will most likely go for someone else.