One thing to consider and investigate is whether there was any insurance coverage at this organization. If so, there may be a fund available for recovery of money damages. While that won't restore the venture itself, it might provide seed money for a new start-up, revamped to avoid the problems experienced in the past. Please note that I practice in NY. As they say, "Your Mileage May Vary." Best of luck.
I assume the person asking this question is on the board of this entity or is employed by it. I have reviewed the answers put forth thus far and agree that the non-profit may have claims against the individuals who have apparently caused the closure of the business. Without any more information, however, my advice would consist of the following two points: 1) First, if the board of this non-profit entity is now or has been aware of the facts and has the ability to file suit on its behalf, it should do so promptly after carefully reviewing all the circumstances and after consulting legal counsel; and 2) the board members should also carefully consider their own duties here as directors and their potential liability as members of the board having become aware of the situation and, as board members, having certain duties to act in the best interest of the entity.