Originally posted by blumoon722 I think if you push the button down and push the metal piece sandwiched in the middle with a coin or screwdriver in the direction shown by the arrow, it should come off.
Originally posted by pentageek There is small lock tab between two large tabs - its edge is visible right under the arrow in your picture. Press it with a coin or a screwdriver, and it will come off.
Thanks, guys! That was it. It had seen the arrow and the metal tabs but I was hesitant to push too hard. Your advice made it possible. PF members have a solution for pretty much any problem. Thanks again.