My general contractor resigned the job because of incapacity after signing a building contract. The final total exceeded the maximum allowable cost in the contract for the build . More than the entire cost overrun is attributable to his expenses and his subcontractors. I assumed the general contractor role and went under budget on my expenditures, but my underage was less than his overage. Considering the fact that his costs are totally responsible for exceeding the maximum allowable cost, under what, if any, situation is his withdrawal NOT breach of contract?