To your question, I never bothered the block configuration in Shoehorn before I switched to Clean. So, I couldn't tell you how they were set 'out of the box.' I only know that when I returned to Shoehorn from Clean they were set to display on the 'Right" for all and this page.
The key to the resolution was your mentioning of the Grader report, I noticed that Shoehorn defaulted to blocks configured below/under the main content in the Grader page layout. So, I went to the SCORM reports page and configured the blocks to display below/under the main content. Voilà! Now, I get the full SCORM report spanned across the width of the page-beautiful! Perhaps that was Gareth's intent for the SCORM reports page? However, there is still a bit of an issue with Shoehorn overlapping buttons vs. Clean's layout (screen shots.) I'm sure the fix will be 'child's play' for you and Gareth.
While we're on fixes, the iPad portrait view places the custom menu on 2 rows (screen shot). Is this avoidable?
Finally, I've been looking for a word for that green my client loves. Baize is perfect (I've never heard that word.) It is hued to match their public website. In the States we say "pool table/billiards" green. For fear that my client will ever stumble across this post (you know the internet) my new official line is "I love that baize green; it's so earthy!" As the O'Jays sang "Got to Give The People What They Want." (1975; awesome song) But, I completely agree with you. I'm hoping to put a subtle texture/pattern/monochromatic noise element to tame the beast. I'm just drafting so I'll also Firebug some other options within the main content div. Thanks for the suggestion.
As always, your help is invaluable ...