Okay, i can confirm:
remote abortion via Browser/Management console (i really dislike that word!)
.\ultituner.exe clearbed -p 1.2.3.4. --> dismiss clear print bed message, retry question appears
.\ultituner.exe clearbed -p 1.2.3.4. --> retry question dismissed, printer ready
Right now, a print with old REC ABS is waiting, and it is very difficult to get a sticky print 😐 So there are many occasions with failed prints. Good for debugging/testing!