URGENT: How to remove a ethernet interface??

I was messing around with metarouter following the guide on mikrotik wiki.
now i’ve got an ethernet interface which i couldn’t delete.
And also creating a bridge with the same name i’ve used before doesn’t work anymore.
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How do i delete that “local” ethernet interface?

ohhh crap… now i can’t even create any bridges

Looks like ‘local’ is probably ether4 renamed. just doubleclick and rename it back to ether4. Might help you out. Also, if you’re connected to an interface that’s part of the bridge, you might get disconnected from winbox. Try reconnecting.