I reset Norns with unplugged devices as per @okyeronās advice and that worked.
Initially it looks like all is back in order. Though I have not spent too much time pushing things since restoring order.
I wish I had more specific information of the circumstances when the total breakdown happened (will keep my eyes and ears peeled now) but the only thing I did just before this went down, is that I uploaded a few fairly large .aif files to Norns via Cyberduck. I intended to use them with the various sample mangling apps: like CC, mango, angl etc. These are fairly large: most are within 6-10 min range. Not sure if the size of these files could have caused some difficulties, but that is the only ānewā circumstance that directly preceded the freakout.
Incidentally what is the amount of space on Norns that is free for sample storage? As in: where do I look to check if I am maxing the space on the drive out?
Thank you for the brilliant work: I can see myself spending a lot of time with Cheat Codes!