Removing a Damaged Orifice Tube
The orifice tube is stuck and has either broken inside the tube - or - is close to breaking. Once the top breaks off, you find yourself with an orifice tube that you can no longer reach with needle nose pliers, and probably damaged so bad you can't leave it as is.
Use a 3-4" drywall/deck screw and screw that into the orifice tube.
The picture above still has the Ford orifice tube stuck on. The screw needs to be about 3-4" long. They are available at any hardware store.
Warning! Do not scratch or gouge the inside of the evaporator tube. Damage to the o-ring seal area will affect system performance.