The short answer to your question is "yes." As you can see from the answers below, there could be any number of reasons that the seller would want/be required to continue to market the property, including changing the listing price. One other thought would be to check the provisions of your accepted offer (contract). Assuming your offer was prepared on the Colorado Real Estate Commission approved form(s), your contract should have included a Short Sale Addendum (a link to the blank form is provided below). In the last section of that addendum, Section 8.4, you should have checked one of two boxes. If you checked the box in Section 8.4.2, the seller has the right to accept subsequent offers from other buyers without liability to you. That same provision allows both you and the seller to terminate the contract for any reason before the bank accepts the short sale. If you checked the box in Section 8.4.1, neither of those rights applies. If you have questions about your rights or the seller's rights under the contract, you should consult with legal counsel. Good luck!