Thread: help getting out of a contract?

looking for some advice.... we are under contract to purchase a home. went under contract in early dec 2009, closing date set as 3/31/10. however, in late dec 2009, it was determined that there was contamination on the property from an old underground oil tank that was being removed. despite this, the seller's were optimistic that the clean-up could be completed and the NFA (no further action) letter obtained in time to close on 3/31/10..... until recently. in early march, we got a letter from the seller's lawyer stating that due to the oil contamination clean-up, a late june 2010 closing is what they expected? this past friday (3/26/10), we got a letter stating that a july 30, 2010 closing is now what they expect? all the communication has been through the lawyers. we (the buyers) have sort of been sitting on the sideline, watching and waiting to see where this goes. we have not submitted any letters/documents to the seller's, stating that we agree or disagree with the proposed, delayed timeframe. now, what are trying to figure out, is if we can walk away from this deal (contract) and get our deposit (that was put towards the purchase of this home) back? the easy answer would be ask our lawyer. however, our lawyer is out of town for the next week and we would like to know our options within the next day or so? a new home that we would like to potentially like to put a bid in on, has recently come on the market and we would like to make a move on it asap. what are you thoughts? in light of what has transpired, can we walk away from this deal and get our deposit back? thx so much in advance for any/all advice?