Shame you can't use that hack in Lion
Thankfully, ReSpace app was bought by the same company that makes TotalFinder, now TotalSpaces. You don't need to buy it yet, it is still in beta and had an update today. When 1.0 is released it will be a $12 license to have 10.5/6 Spaces in Lion, and the developer is working on bringing Exposé back as well. So far it's a fantastic app!!
TotalSpaces
That is some interesting news. I've been following ReSpaceApp for awhile and it is good to see that it will be released soon. Also, TotalFinder is amazing; it is a shame that Apple was lazy with their Drag files animation in Lion because it makes TotalFinder too laggy to really use. Heck, the dragging animation in Lion barely runs without TotalFinder.