I don't want to hijack your thread, but since you asked... On the "trial" divorce, my W in February and March 2014 insisted being on dating websites and regularly dating other men while we were separated. This was pre-DB for me, and I had no idea how to deal with it.
So it got to the point where I gave her the divorce papers and told her she would not be married to me and dating other men. W wouldn't sign the divorce papers, so I came up with the 'brilliant' (note the sarcasm) idea of having the trial divorce for 3 months, where we agreed to release each other of our marital vows.
On the positive side, if we did not do this we would be divorced by now. But W went crazy with her dating for several months where she was out every night, resulting in 2 of the 3 kids with her failing their school work.
A "trial" divorce is not for the timid. I did not fully detach, and my 'snooping' resulted in a major fight with W this past July. Since then I have little dealings with W, and this mostly dealing with our kids. Good luck.