As a person who always paid attention and listened to what was being said, I recall hearing a number of talks that struck me immediately as not very "JW-ish" but very "Christian-ish". Even when I was fully in, these were always the best--probably because they created less cognitive dissonance than talks that featured the Old Testament. In the liberal area I grew up in, I doubt this talk would have been shut down --maybe a few raised eyebrows or "counsel" afterward for the brother to stick closer to the outline.
Unfortunately, when awake or more liberal JW elders do this, I think it just pulls doubters back into the ranks. If you want to wake people up, be a by-the-book, Old Testament lovin', WT rule quoting and enforcing elder. Who do you think wakes more people: Anthony Morris III on a rant or Mark Sanderson delivering a kind and balanced talk on brotherly love?
Just a thought....I know I would have woken a lot sooner if I hadn't been raised by loving and liberal JWs and grown up surrounded by liberal JWs. I woke as an adult when we moved to another area and the congregation was loaded with controlling, judgmental, meddling by-the-book elders and elderettes....and then the tight pants and colored socks talk...that was it for me.