1 - In Editor, add yourself and an explosive specialist subordinate as well as a handful of mines a short distance away (I used the bounding flavoured ones)
2 - Instruct your subordinate to go 'Combat' and 'Stay crouched' from the '7' menu
3 - Instruct your subordinate to disarm a detected mine from the 'interactive menu'
4 - The mine is disarmed and after doing so your subordinate stands up instead of remaining crouched.

You have to reissue the order every time you ask him to disarm a mine.