There was more than one. Their only job was to obstruct NASA's Statutory Obligation to publish Scientific and Technical findings (about climate change) a fully and promptly as possible.

They could not even do that correctly. They left early for XMAS and New Year and didn't check their email remotely. They missed their chance to suppress yet another "warmest year ever" press release. so it went out. Then phones at the Dubbya WH started ringing off the hook with Reporters asking for a response to the memo. When reporters found out that previous hottest year memos had been kept from them the IG investigation got started. 

The Dubbya appointees deleted their own copy of the email and claimed they had never received it. That is also covered in the IG report.