Those 330-sat outputs are standard outputs for anchor channels. They show up when the a channel is forced closed. They are called anchor outputs. Their purpose is to enable CPFP in case the force close commitment fee is not enough.

This will be consolidation transaction by a very large node that's had a lot of forced closed channels.

If/when you have a channel forced closed, you'll end up with one of these transactions in your on-chain wallet.

I would guess someone closed a bunch of lightning channels. Looks like 330 sat anchors.

Someone having a really... REALLY bad day.

I agree with whoever said channel anchors.