As noted by all, get on your attorney ASAP. Your second deposit is not due yet even though there is a "date" for this to be presented. It should be on hold until the attorney review process is complete.
My concern is why the delay in attorney reviews? What questions are causing a delay in the process? Your attorney should be responding to your inquires. This is your home purchase and the attorney works for you, by all means call 5 times a day until your questions are answered.
If you look to withdraw your offer due to the deposit, it seems to me that you are really not interested in this house. During the attorney review period you may withdraw your offer at any time, In todays market I would bet the attorney would charge something for his/her time for work that has been done.
So, break chops.. make calls, get copies of what is going on in the attorney review process, you need to be informed of what is happening this is YOUR home purchase.