1. No, there's no supported way to turn it off.

2. Best approach would be to do what it seems like you already plan on doing: If you can get ahold of them, ask nicely. Explain that you're trying to use gpose and if they'd move it a little more out of the way it'd help a lot.

2 part 2: But be aware they might say no. And as always comes up in these kinds of threads - there's no way to force other housing owners to make changes to their setups or do anything. If they're not cooperative, you could, if desperate enough, look for a new plot elsewhere, or hope they remain inactive long enough for auto demolition.