Here is an idea that will take two people. Make two loops of webbing or string long enough to be accessed on either side of the TV. One loop will be a guide loop, the other will be the loop activating the lever. Have your helper place tension on the guide loop as you manage the lever loop and raise it to the level of the latch. Take the lever activating loop and pull to the latch to release.
Actually, If you make the loops long enough, it will not take two people. Your left hand can guide your right hand can operate the latch.
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