I sent a driving licence and it got approved. I agree that I would not have taken the risk of coming in before the approval but nothing seems to stop him from entering as a tourist and doing another border run once the DTV is approved. I bet that they will come up with stricter rule soon, this visa is very new.
It does not state that you have to stay. Most of us westerners are visa exempt and we are not required to present anything as a tourist. It may be safer to stay but not mandatory. You can still go there as a tourist. Let's see what that fellow story is when he gets back in.
It does not say that you are required to stay in that country after you applied. If there is a requirement, send me the documentation that proves it and you will have my apology.