Against all odds, it was neither Norway nor the UK who filed the appeal to the ISO/IEC JTC 1 concerning their DIS 29500 (i.e. OOXML), but South Africa, Brazil and India!
ISO/IEC JTC 1 now has to take into consideration these three appeals (there is also a rumour about a fourth one), but the options are still quite open for the JTC 1 (or more exactly the ISO and IEC bureaucratic elite) to quasi-elegantly bypass these appeals and still push OOXML to become IS 29500.
At this point I would not dare speculate, because I have not yet had enough experience with ISO and IEC decisions to predict any outcome. Some of the points both South Africa and Brazil are pointing out (the content of the Indian appeal is not yet known) are quite serious and if proven true might well mean a big stain on ISO/IEC JTC 1, the DIS 29500, Ecma International and with it Microsoft as well.
For more read the entries on ConsortiumInfo.org regarding the South African, Brazilian and Indian appeals.