Sure. I read est as saying that Administrators are more restricted in Server 2008 than they were in earlier Windows versions. I assumed they were talking about the relatively well known technique of scheduling a cmd shell to run as SYSTEM, which that blog mentions being prevented in Server 2008.

But you would still expect an Administrator account to be able to load files onto the system, so obtaining the SYSTEM shell remains pretty easy.

The distinction between SYSTEM and Administrator was a convenience, and if I understood est correctly, it still is.