[Q] Red off button Jammed topic

I sold my z2 to a friend, and when he has tried to insert his new sim has forced the red reset/ off button down too hard, and its stuck. So now when the phone has any charge it is stuck in the cycle of reseting itself, vibrating 3 times and the sony logo comes up, and it just keeps doing this. Are there any tips on unsticking the reset button.

Cheers

Liam