Sorry for the place you are in. I'm not really here to give you advice as I'm in a similar situation as you and am working through it as well. From what I've read, yes, the marriage is worth saving. Your H seems at least somewhat sorry and willing to work on the M so that's a positive.
Read the Divorce Remedy, work on yourself, and try to stay busy and positive. Post frequently until you are off moderation. Hopefully some people with better advice will be by to help you along.
I hope things turn around for you soon, but just be prepared to have your patience tested. I'm in month 5 of separation, and about a year into my situation so I can definitely emphasize. Good luck!
M:28 | W:28 | T:4.5 | M:2.5 | No Children EA1 Uncovered: Jun 2011 EA2 Uncovered: 2011-09-29 S: 2011-09-29 I'm moving on: 2012-05-08 My story: http://bit.ly/K3ttPM