I hope Diane survives. I think they were out of time as the bell had rung.
Now that Jaz is known to have called out Paul, if Jaz is murdered next it will cast more suspicion on Paul who is known to have a motive for shutting Jaz up.
There's no way Paul is getting to the end now, it's not just Jaz who has suspicions about Paul. The players on Uncloaked were shocked to hear Miles and Harry were Traitors but not that shocked about Paul. He's acted suspicious a few times. He will definitely get banished before the end. No one's going to trust him to the end/the firepit.
Harry still has an excellent chance of winning, no one suspects him at all. Miles was also above suspicion but the chalice task may scupper that - he was acting quite weirdly with the chalice. If Diane does survive and then Claudia says "the Traitors had to murder in plain sight but they failed so no one got murdered last night", then I can see people thinking "how were they going to murder?" and Diane thinking "why was Miles acting so odd?" etc.
Also, I expect they will have to recruit another Traitor before the end, so who that person is will change things a lot. If it's someone useless they may accidentally say things to give others away. I just hope the ending is better than last year where Wilf was thrown under the bus when he deserved to beat the clueless Faithfuls.
Diane or Ross should totally not reveal their relationship in the castle. Look what happened when the couple revealed their relationship last year - no one trusted them again as they had been keeping secrets, so they didn't last long after that.