Is there a word for something like writer’s block when you know what you need to write but don’t want to?

Got up this morning to write (last week I’d strained a muscle in my back, and so skipped sitting in the cold basement, and yesterday I slept through the alarm) knowing what I had to write, but was simply unable to do so, because as an outside observer, I don’t want the scene that follows to happen, even though it pretty much has to. It takes the story in what I (finally) realized is the correct direction–but I don’t want to do what needs to be done!

Of course I could be blocked simply because 30 minutes in the morning isn’t enough time to write a difficult scene.