I know that was the preferred formation under Bos, although in reality he was limited by a few things which didn't quite make the line-up posted above the correct one.
Under the interim managers, Van der Struijk has played alongside Rajkovic (Sprockel has picked up an injury, I believe). Marcus Pedersen made his debut for Vitesse today, scoring twice, but didn't play before due to injury. Nilsson has been played as the striker most of time, sometimes being replaced with Pluim. Jenner has been appearing on the right, whilst Stevanovic has been coming of the left a bit.
So basically, it has looked like this:
RCB: Van der Struijk
I have a feeling the formation will change under Ferrer and Menzo though, so we'll have to wait and see for a while.
Buon compleanno, il pibe d'oro.