I'm curious to see the change you made, since I've done the same thing hundreds of times (adding or changing an article and giving a reference) and I haven't noticed random reversion.
I considered including that in this post, but it would have the net effect of tying several of my online accounts to my real name, and I'd like to avoid that. Sorry!
I understand, I don't even like linking my pseudo-anonymous accounts across different sites. Eventually you'd give away enough information that you could be easily identified anyway.