Depends what is the value of the people tied to the track.
Are they just people? are they customers? are they investors?

An investor's life is a worth a million people's life! it's just business!

Clearly the solution is to detonate a 25 megaton B41 nuclear free-fall bomb on the site so that both the Trolley and the people on the track get vaporized out of existence and neither side wins.

You see, you have to show people that they're never safe and that nothing can save them from the things beyond their control. Have you ever thought about how lucky we all are right now not to be smashed into oblivion by a particularly large asteroid or similarly eradicated by some other inevitable force of destruction?

In my book there's no point in crying about something you couldn't have done anything about.