I don't think you can do this without removing the front panels, If you could take the grille out, you might be able to do it but to get to some of the tabs to remove the grille, the front has to come off.
Not a tough job to take the front off, I have done it a few times and it now takes me less than 45 min to remove the front end. The toughest part is probably getting the side skirts off without breaking the clips. I keep a few spares on hand now.
The latches I put on were not on my car and the owner was helping so I didn't feel right about whipping out the camera. I probably should have.