Well it nevver came back aaaaand I am a mushroom lover so I can't just kill it 😲
Slime molds are known to be very smart and intelligent in finding new pathways afair from the mushroom docs I have seen.
I have also some other species growing in the other beds, I'll take pics of them, too. Just lovely to see other shrooms growing which are not coming from my introduction. (I am spreading lots of Psilocybes (meadow and wood species) in my garden by tossing used and/or partially molded cultures.)

A good and healthy ecosystem MUST HAVE shrooms 😍