If you're worried about code doing things you don't know about then there's a heck of a lot more to VMWare that you could be concerned with. It's a huge, complex application. A few KB for a hidden game is irrelevant - you don't know what hundreds of MB of it actually does. If you're worried about things being hidden in apps then you run them in a trusted environment on tested hardware after you're audited the code (and removed the easter egg).
The only reason this should worry anyone is because VMWare potentially lost sales to organisations who do need to run audited code. I imagine they would have been supplied a version without the Easter Egg though.