Hi Steve and Edna,
This Thread seems to answer to your TV removal quandary:
Vista 32YE TV removal
and then:
Post #21
seems to describe the methodology of removal. Basically, you will find screws that must first be removed in order to lift the TV off the wall bracket. On the example above, the screws were accessed from over the top of the TV going downward. On my 22M, the back TV comes-off by first removing two screws looking upward. It has to be something like that. Please let us know what you find.
Thanks, Eagle5