In Up Next/Library section, if there is a show that is currently being recorded, and you click on the show, it opens the show info screen from which you can select: Watch, More, and Trash. It would be convenient if there was a Stop Recording button as well (or add Stop Recording to the More options). As it stands, if you want to stop an in-progress recording, you need to back out and either go to the Schedule section or, if the show still shows in the Guide, you can stop it there as well.
Thanks!