So, I don't understand. Did she object to the open marriage? Did she want it, or not?
The moment you cease being a dominant male and become "domesticated" (being sports with an "open marriage" is not a good sign), expect yourself to be punked by your wife, especially if she is not socially conservative in the sense of being keen on preserving a solid familial institution, et cetera.
In a way, you should manage a family like you manage business. Too much laissez-faire, laissez-passer will ruin the institution.
The plot thickens.
Assuming that you're Sadistic Bastard, the content of this thread makes sense even more, given how overtly you used to write about how much of a successful polyamorous couple you were, and how "understanding" your partner was in that regard. Such a relationship ending in shambles is not uncommon, as there is a thin line between open-mindedness and sheer gullibility that is oftenly crossed in this type of social interactions.