Well, I'm no physicist, but I agree - it's bogus. The problem, I think, is that it assumes that time is the fourth dimension. Instead it should be the last dimension. So if you're talking about 6-space, then time should be the 7th dimension. If you always call time the fourth dimension, then you get these wacky results where in 5-space and up you can see and exist in all time simultaneously.

This is the problem with calling time a dimension. It's useful, but it makes it natural to talk moving forwards and backwards in time. Error.