Yes, daneditor
Rigby Reardon on avsforum.com (in 2009) made an avisynth script to use the US bluray audio and sync to the Italian bluray video HERE
That's what you found!
I have done the same for FAFDM as I said above. The Aluminum Falcon above has used my version and it seemed to have worked for him. I posted a how to on avsforum too HERE
I wouldn't be surprised that same thing happens with my script in the not to distant future!