I understand the principle of the thing and would never criticize you for steering clear. But this might be an opportunity to mend a fence. Maybe Steve is looking to fix things, in the only or best way he knows how. I could be wrong about that.
I’d explore the offer and the motivation behind it. Maybe there’s a new opportunity back at Modern. God knows the place hasn’t been the same since you left. You may be able to get the gig back, for better pay and the schedule you prefer.
Whatever happens, I wish you the best!