From what we saw:
Hubert was the default vote, but started scrambling and basically just offering to work with the old Blues. It didn't seem to be working, except that Ashe started talking about how they could 'use this to get a bigger threat out' (at that point it looked like he was aiming for Dorothea, though).
Then Petra posted your post asking her to tone down her post gimmick and speak English in her confessional, saying that it looked like things weren't going to work out between the two of you. She then approached her alliance of old Blues (Petra/Hapi/Ashe) saying that you'd said you didn't like her.
From what I saw, Ashe jumped on that as an opportunity to move the target away from Hubert and onto the perceived bigger threat (you). The fact that you were likely to mutiny was also used against you. It was a massive shame, because you looked like you were in a fine position, but Blue Lions controlled that tribe and that's what they decided they wanted.