Hello Rob and thanks for your questions.
The act of removing all contingencies is written acknowledgment by you, as the buyer, that there are no further impediments to the completion of the home purchase--which is why I caution my clients to understand the gravity and consequences of removing all contingencies. If you have removed all contingencies, then you'll most likely be unable to withdraw from the sale without incurring the loss of some or all of your 3 percent earnest money deposit.
The best thing to do tomorrow, is to call your Realtor and his/her broker to immediately explain the situation. Depending on the wording of your purchase agreement, the bank's addendums and sale stipulations and the reasons for your wishing to withdraw from the sale, they may have options to suggest. Otherwise, only a qualified real estate attorney will be able to provide you with a legal opinion on this matter.
Grace Morioka, SRES, e-Pro
Area Pro Realty