Didn't have that special tool. Used iPhone repairset screwdriver. Worked fine with sticking it in to the holes verticaly and then push it towards me a bit, then changing holes and repeating that step.
Pulling on the ear didn't do anything, so I removed the whole screw at this step. The screw stayed fixed on the fan and I didn't have to remove it at the step where you remove the logic board screws.
Probably I didn't want to use too much force .. but it worked