My Jensen TV mounts in an entertainment center and releases from its bracket in order to attach it to a factory-installed bracket outside. I haven't tried it yet, but there is a chain on the indoor bracket - sort of like an old lightbulb chain - and you pull that to release the TV. Is there enough room behind the TV for you - or someone with a small arm - to reach back there?
2013 Surveyor SP220
2010 Silverado LT 5.3 V8
The world is a great book, of which those who never stir from home
read only a page. - St. Augustine