Don't use a py bar or screwdriver of any kind! It's not needed. What you have to do is remove the panel on the driver's side (right leg side). You should be able to see a black cable (kind of looks like a bicycle brake cable) for the HVAC. Unhook it from from the clip holding the cable itself and the end where it is looped to the HVAC control (white stud). You'll have to depress a little clip attached to the stud to remove the cable completely.
Next, go to the passenger side and remove the glove box. Open it, squeeze in both sides at the top to realease it, then remove the entire box from the pivot clips. If you look to the HVAC area as you did with the driver's side, you will see the cable controlling the fan speed. Same process as above, remove it.
Now you can point the 2 middle vents down, grip and pull straight towards you. You will need to pull fairly firmly. You will feel that you are going to break something, but it just takes some force, it'll come out. Be careful not to pull too far though (just enough to get it away from the dash).
Once that is done, you can go ahead and unclip the remaining attached electrical plugs.
I just realized I forgot to mention that you have to have your HU removed before hand.
To put everything together is just the opposite. Don't forget to reconnect the cables to the HVAC controls. Also, connect them correctly (routing) or else you will get stiffer controls.