You sound centered. Try and hang on to that place.
Now that you have some downtime, here are some things to consider:
1) With all you have recently learned about your wife while you were gone, do you still want to make this marriage work?
2) If the answer is "yes", what do you need from her in order to make this work? NC and transparency? Treatment for alcohol abuse?
Think these things through so you know what you want to tell her when you are given the chance.
Me: 44, Wife: 39 M: 17 years T: 20 years Bomb on 08/25/09 1/13/10: MC started 1/28/10, 2/8/10: More bombs 8/28/10: Wife moved out No talk of D, no movement