If you can trust your h enough to leave the savings alone for the time being because of purchasing a car and tires, then I would suggest that you take a little bit out for now. You can always take the rest of funds out later.
Your lawyer has already given you some good advice. Did you discuss joint credit cards, health insurance, retirement and 401K plans, etc. w/you?
I agree w/AJ, some lawyers will spin up their clients so that they will get the ball rolling on separation/divorce proceedings because then are very much aware of how much back and forth communications take place when people are emotional over material things. If you can make a list of questions and can remain calm when discussing things w/the lawyer, then you are one step ahead of everything. Don't allow the lawyer to talk you into doing something that you gut tells you isn't right for you.
Good luck!
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.