Hello,
I just wanted to re-open this issue. I've tried to empty the cache of my browser, even to test with a new one, without success : the restricted posts don't appear in the RSS feed, with the option "protect RSS feed" set to false.
So I went and looked in the code of the plugin to see how it worked. I'm not an expert, so I tried to find my way. What I got from my little investigation was this : apparently, the only place where $uamOptions['protect_feed'] is used is in the function showPost($posts = array()). There the generic function "the_posts" is redefined. Now, in the function showPost, do we really act on the query itself delivering the lists of posts? As far as I could tell, it didn't seem so, but I might be totally wrong. If correct, that would explain why, no matter the option $uamOptions['protect_feed'], restricted posts don't appear in RSS feeds.
Can someone have a look too and confirm? We'll find the solution more quickly!
Great plugin anyway.