Welcome TPTT.
Read part of your story via your other half's posts. It re-enforced my belief that creating space between a JW and the Borg is the best way to help people out (and I mean the best way an external person can help).
In your case dancing lessons helped create space. For me it was sports. For some it is just time away from meetings. Indirectly encouraging JWs with doubts to create space between themselves and the Borg HQ will allow some of the 'hard coded thinking' to melt away hopefully allowing there doubts and critical thinking skills to come to the fore.
Instead of preaching door to door again... I would rather a 'Take a doubting JW to the pub day' once a week :) Especially as I can't dance!