Locking the buttons on the XL2 is helpful. I have gotten calls where pause or stop button is inadvertently hit when the lid on a case is closed.
However, I also get support calls from customers who have accidentally locked their XL2. The have an L in the middle of the play triangle
It is simple to get out of the lock mode. Press and hold the start/stop button for 3 seconds.
More details and used for the Locked Run Mode in the XL2 Manual