Eh? The xGLOBnn ticket is subject to the same "whichever is the higher price of origin or point of sale" rule as xONEn tickets. So, yes, anywhere can issue it, but the price may well be higher.

As an aside, I note an interesting consequence of S7 joining the GLOB ticket: for the purposes of that ticket "Europe-MiddleEast" is now defined to include the whole of Russia. I'm trying to get my head round what that might mean for xONEn tickets were the same to happen when S7 joins OW.