Is Microsoft preventing Corel from supporting ODF?

In a recent blog entry entitled Shame on Corel, Andy Updegrove, legal counsel to OASIS (the consortium that's the steward of the OpenDocument Format specification), lashes out at Wordperfect for wavering on support of ODF.  The blog points to a recent eWeek story that reported that Corel would support the format.  Now, based on an interview of Corel officials that Updegrove spotted on BetaNews.com, it appears as though Corel isn't as firmly behind ODF as was originally thought to be.  Corel's inability to take a stand is particularly confounding to Updegrove given that Corel was one of OASIS' OpenDocument Working Group's founding members.  One dot that Updegrove didn't connect -- but that those commenting on his blog did -- is that Microsoft made a $135 million investment in Corel in October of 2000.  However, I remain unconvinced of the conspiracy theory since Microsoft sold its stake in Corel back in March of 2003.  Either way, as the #2 ranked provider of office productivity software, it appears as though Corel is just as fearful of the impact that an open standard will have on its franchise business as Microsoft is.