Yesterday I made a stupid mistake. I wanted to get rid of a received dust transaction of 547 sat and tried to send it to a another address with a very low fee of only 336 sat.
This isn't helping you now, but for next time:
But, wouldn't that not also stuck any other transactions being done after the dump of the dust, as they would be a child of this dust dump transaction?
I would have to wait first for this transaction to get confirmed before I can do any other transactions?