From that link it is a little confusing and wasn't the best place for me to post the question in hind site but was same problem the other user had on Evo and still seems unanswered why the TVs disappear. For me though what Bruno suggested works.
How mine is setup:
Have the Hidden element category created and all the templates you want not to show added to it. I do not have the Admin group added to that category because this screwed up TVs.
In the Editor group access add your Hidden Element Category to them as follows:
Min Role: member - 9999
Access Policy: Load Only
That's it. Works for me anyway.
If you don't want the template selector to show at all on select resources this is a little more tedious. You have to go into Form Customization, create a profile, and create 2 sets for each template a resource uses that you want the selector removed, one for create and one for update with the template box unchecked in the list. Duplicate these 2 adding the template you want in the heading part of each set.
I'd love to know if there is another way to accomplish this as having 20 sets doesn't seem like the best way to do it. I haven't had to yet but if they need to be updated I have to go into each one and do so. Or fix one, delete the rest and duplicate. Either way about the same amount of work. For 10 templates its a pain but not a huge deal. If I had double that amount I might outsource it to the Philippines