Reserve fuel, whether it’s alternate, holding, weather, contingency etc is there to be used.
Thats why you have so many fuel exhaustion accidents. At all points along the flight you must have your reserve and any holding be it traffic or weather available. In your example you would have needed to divert at this point:
it will take 15-20 minutes to get a tug to tow it clear...and your alternate if required is 35 minutes away..
Its called command decision making.