Flat Earthers who returned to sanity

 You frequently see things on forums like "once you go flat, you never go back" ...

.. so even one counterexample refutes that.  One often sees responses to these counterexamples (for example, in a comment to this post), that these people were never really flat Earthers, but they never post any evidence other than their having left flat Earth, see the No true Scotsman fallacy.  

To save having to look for the details each time someone claims this never happens, I'm putting them here.  

The first two former flat Earthers (FFEs) appeared on the SciManDan Podcast but they also show up again in the FTFE playlist at the bottom of this article.

The first is Craig Bryan Pennock, Seek Truth Speak Truth (STST)

I had previously written that his name was  Frank DiLeonardi, but Craig corrected me in a Facebook comment.  Now I'm wondering who Frank is and where I got his name and whether he has anything to do with this at all.

And this is Ranty (Flerfspective, this channel isn't available now, I don't know what's going on) who describes himself as a recovering flat Earther.  

Here is a video about a FFE who goes by the name "Johnny Orbital"

Here's an article, Ex-Flat Earthers share the moment they realised the world is actually round, based on a thread at Reddit.

Here's a playlist, Interviews with Ex Flat Earthers, (currently 7 videos, although the last one is numbered 8) by FTFE (Fight The Flat Earth).  In addition to the previously mentioned STST and Ranty, it also has discussions with four more FFEs, Clear Cognition (Adam Doughty), Sean G, Blu, Jose G Gonzalez, and Promethean Kitchen.

YouTuber Rachie 000000 is another former flat-earther.  Here's a sample.