With all them cows, you quite steaked a claim in Salisbury, lad. And that's a crackin' good architectural rendering. Trees, people, lighting, sky -- all great Mr. Ploos.
Since the original Constable looked so weird to my eye and it being sort of low resolution blurry, concerning that lower bit with the wall that looked to be leaning, I searched the internet to see what was up with that. As it turns out, that is a round building set apart from the main church and is at the corner of that courtyard looking walled bit we can see.
That round bit was erected in 1263 or something (my Spanish is a little hazy and the youtube tourist video that spoke of it was in Spanish), so it was something Constable would have been looking at as well as he was painting/sketching for later in the studio.
Anyway, I think, as you show it, there are little stair step braces for those walls which as they turn could make it read as if it were leaning. And since he lit the wall facets the same, it was a little hard to read as if it was turning (ie. he didn't separate the planes in a heavy way, which could be correct under certain lighting situations.)
So in short you nailed it with some precision based on your reference. Your observation is keen and sharp and you enhanced the clarity with your reasoning it out. You really took it in hand. Well done you, Mr. Ploos.
Oh, and as to the sketches: This last round kicks some serious booty. I think you have a bit of the natural candid, slightly caricatured every day man feel of Breughel (elder or younger, as you please) in these. I'm seeing real individuals in what you say visually. These folk breathe and walk about with all kinds of voices.
Again, excellent work Sketchy Ploos!
"Not a bit is wasted and the best is yet to come. . ." -- remembered from a dream