I probably should've asked first, but the best place I could think of Abe being so that I could use him soon was within the restaurant being held up right now. On the flip-side, the inside struggle would make it easier for the League members to get in and end the conflict (unless everything or even just half of the situation been handled by him - that would prompt interesting dialogue between League members and the random vigilante that saved a hostage crisis, should that be the case). Though, doing it all lone wolf style seems pretty gary stu-ish, but Abe is skilled and has an environmental advantage.

Or he could just make them shit their pants via bluff/threat, should they be more easily convinced that way. "Touch one man or woman and I'll bring down this whole building on top of everyone's heads."