Many have recently complained about ISO's voting processes, mainly how they need to be revised as currently it seems it's possible to buy yourself a standard given enough lobbyist and money.
But part of this is ISO's trust in ECMA. ISO allows ECMA to submit standards for the fast-track process because it trusts it to approve good standards. If OXML (as it seems to be called now it's approved, formerly OOXML) was indeed such a bad standard (which I don't doubt personally) then ISO should maybe review it's relationship with ECMA too?
This is only a tiny part of the picture obviously, but one I haven't see mentioned elsewhere.