There was a period of about 18 months where I was questioning whether or not JWs had The Truth™ before I finally had had "enough!" of their mental and emotional cruelty and just couldn't bring myself to attend any longer. Like you, I felt the need to get my immediate family out before I could cut the three-fold tether of Meeting Attendance™, Field Service™ and Association™. With my illness, though, Meeting Attendance™ and Field Service™ faltered, and subsequent to that Association™ was drying up quickly. We had a core group of "friends" who, little by little, gradually stopped including us in social events. I have to admit that, during this time I was doing my own research, and coming to the realization that this was a cult and that escape was necessary, yet I never tried to influence anyone other than Mr Scully. The criticisms that I felt comfortable enough to verbalize to Mr Scully had nothing to do with doctrine, and everything to do with the lack of love we were experiencing from our local congregation. He couldn't dispute what was happening, and nobody in the congregation could deny what they were doing either - so it was fairly easy to get him on-side. Having a mental illness (even an easily treated, temporary one) gave me a bit of leeway if I ever had a meltdown or an unseemly outburst. Once we decided it was time to leave, we started exploring doctrinal issues.
One of my biggest fears during that time was that I would be discovered and exposed as a thought criminal, and it was articles similar to the one from Sunday's study that induced a certain level of paranoia. "They know!"
So while I applaud your noble and generous efforts to help your family and loved ones to escape - I do hope you'll be able to remain under the radar, so to speak, for as long as necessary. Perhaps in your case, you can incorporate some criticisms and blame the 'outbursts' or 'crazy talk' on your recent strokes... which in some cases have been known to reduce a person's inhibitions. If this is something you've experienced already - including memory lapses, or memory loss, or emotional lability - perhaps some seeds can be planted. Of course, you would be profusely apologetic for upsetting people around you, and wish there was some way you could control the meanderings of your thought processes... our loved ones can sometimes be very patient and forgiving in cases of serious brain trauma. You know your loved ones better than anyone, so you can test the waters to see what you can get away with, or not, as you see fit.
As always, my very best wishes to you!
Your friend, Scully