Have you tested v1.1 spread in PLP? If you have, please list your instructions in detail. But I am guessing you tested game in single-screen & assume PLP will work the same. It does not.
The WSGF DR for widescreen uses basically the same method (& says nothing of LLL): Widescreen fix, which requires v1.2, see here
http://www.wsgf.org/dr/flatout-2 PCGW uses the same Widescreen fix for widescreen (& says LLL is broken, which may well be untrue, as PLP works). See here
http://pcgamingwiki.com/wiki/Flatout_2I tested the boxed game, so maybe had v1.0 installed initially. Update 1.2 was required for the Widescreen fix to support it. So likely never even tested v1.1.
I would love to improve this spread though, as the game in multi-monitor has some player view issues (detailed in instructions). So if you test the game in multi-monitor, let me know your results.