If it works at all, that is.
Seriously, this is the last straw of hope I have. I can't even imagine how a german DLC should work on an english copy, if even possible. Maybe, in roughly two weeks, when the region lock gets removed, xBox Live will be somehow able to recognize the copy as an english one, and just automatically arrange the right language (ignoring the whole FIGS arrangement), something completely in the realm of possibilities and what I would expect from a company that treats its customers the way it's supposed too.
But anyway, what's up with all the south Americans not being able to download this? Is Microsoft putting all spanish speaking people into one huge Spain group, like how Austria and Switzerland belong to Germany? If that's the case then...that's pretty stupid.