Really? I hadn't heard that. Even if true, I still hold by my original analysis. Vetoing a Security Council Resolution in favor of US military action would run counter to their strategic interests. China, especially, is dependent on goodwill in the US Congress. Were they to exercise their veto, that goodwill would vanish and they'd be screwed. Russia, conceivably, could veto the effort, especially given their current relations with Saddam, but Pooty-Poot's relationship with Bush would be shot, and I imagine the favor of the United States is a little more important to them than the favor of Baghdad.
I think there is money involved. I think Putin will agree to everything with the condition that the new Iraq must pay the zillions it owes Russian companies for weapons provided decades ago. The Soviets sold, but didn't know how to collect. Iraq is rich and there will be plunder to dole out for years in the future. Putin wants what he is owed. it's iccredible to believe but the Soviets just couldn't get the hang of foreign trade, especially the part about collecting the receivable.
Plain old precinct politics. Back scratching and money.