Almost certainly. First thing Monday morning, I was woken up by someone performing the same ringing-all-the-doorbells trick. I didn't want to get out of bed for it, so I didn't. But it didn't seem very thiefly to take the weekend off and get right back into it the following morning at 8 sharp, so I dismissed the whole thing, (And I never saw him again, so I bet my landlord was home and took care of it, too.)

All that said I appreciate the sounding board that davis_square provided; it helped me keep my calm on until then.