Obviously you only get to see an edit but I think Harry played it badly yesterday, he seemed to move too far too quickly. He was so worried about taking a swing and missing that he led the attack, giving full details of the plan in the dungeon. It felt inconsistent with the character he said he was trying to play, which was all about making people underestimate him and looking a bit naive.
I think that role started to hurt his ego a bit, really he wants people to know how clever he is! Well now he looks like a dangerous, fully-fledged traitor hunter, and it is reasonable for the rest of the team to wonder how that suddenly happened. When he isn’t murdered people should also start to wonder why not.
Having watched Paul v Miles ending up with Paul as a hero the group should be well aware that fights in the round table may well be between traitors, so last nights round table should have felt very similar to them.
As a big personality like Paul was always going to go eventually, so Harry could have just given it a nudge by asking questions and letting the group piece it all together themselves - ”Do you think the traitors knew that someone would get saved from the dungeon?” “It was between Andrew and Paul wasn’t it?”
When the excitement dies down I think Harry will regret the lead role he played in the attack.