1) He's a Mafia member and decided to play the innocent card (usually, the team tries not to reveal themselves completely).
2) He's a Town member and saw Plesa being harassed by those who lost the "Heaven" round, and after some thought, he realized that out of the 7 who voted (considering that I didn't vote), at least one of them is a Mafia member. And if a Mafia member had cast a vote on their own, they would have retracted it at the last moment. So, it's logical that the candidate for execution is a Town member. It's a shame that the other 1-2 Town members didn't understand this, and their votes remained on Plesa until the very end.
The clues are complex, so I suggest voting by elimination. If such a double reveal during the voting isn't obvious to you, then I don't know what to say.

За всем следят машины благодати и любви.