Hi Steve,
Unfortunately this is not possible and it's not a very easy hack. The next version may not help - to make the interface more lightweight and faster loading it may no longer be possible to edit a user in the user listing. If it does remain possible you will likely have to click so the listing row expands and you can quickly modify the user.
Mass user operations could be coming, too, but that doesn't really help if you are, say, correcting multiple typo'd email addresses which is what I think you are doing.
Regards