I'm inclined to advise you not to tell your h you know about the filing. I think I would just wait a bit and see if he has the nerve to tell you. I would go ahead and meet w/the lawyer/financial individual next week and once that's done and you have your information as to what to expect, etc., then I would sit back until after Thanksgiving before making any decisions as to whether or not to tell him.
As for the divorce chasing lawyer...that's the first I've heard of this behavior and it's terrible to do things like this because of the emotional states of the people involved.
I got my paperwork in the mail a week before Christmas. My xh's lawyer sent me the documents and the envelope had about 20 one cent stamps pasted on the front of the envelope. She didn't even send the info or a copy to my lawyer. I gave him the info and he called her on it. But, bottom line, I knew he would be that he would do something like that around the holidays. That was just the way he was after entering mlc. I do think he was hoping I'd get it a day or so before Christmas, but it didn't work out. I kept the info to myself and sure enough he emailed me to ask me some silly question and I never told him about it. He found out about it when his lawyer got chewed out about the way she handled the situation.
These crisis people tend to do their nasty deeds around holiday and special events such as birthdays or anniversaries because they are miserable and they want us to be as well. In fact, it's their way of making a memory for us that we will never forget I would hate to be in their shoes and live their miserable lives.
Please do not allow the way that this filing was handled to deter you from what you need to do. Yes, it was sleazy, but in a way, maybe it was a good thing because you got a heads up from an unknown source.
I'm so sorry that you had to find out this way.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.