Playlist is stuck in a loop - manually delete?

Hi,

I tried adding a youtube playlist in Iris and now its stuck in a loop. I can see that it tries to load it in the url, but it quickly jumps between two adresses for some reason and the whole interface get unresponsive until I restart mopidy.

I tried installing some other player, but none had a direct function to delelte playlists.
Is there any way to delete the playlist in the backend?

Cheers
F.