Adding 20 IP to his workload is not a win at all costs mentality. It might add 1-2% extra chance of injury but I bet thats worth it for 5-10% increase in WS odds.
It might also add 20-30% chance of injury. Still worth it? How about 50%? It seems that pitching on through after fatigue has set in would indicate sharply higher injury likelihood, and Stras looks to me like he's getting there fast.