Well I can say that I have not seen ANY Molly (pure MDMA) in ATL for quite sometime, nor have I heard about any. (Not to brag but I would have heard about it if there was any supply around here for sale.) If it were Molly then, depending on the size of your line, you should have been messed up! Think about it, 80 mg is not alot of powder and is enough for most people to feel SOMETHING off of it. There have been two types of Tulips in ATL, yellow and a blue one. Both tested for some MDxx but also were mixed with speed (yellow being reported as speedier then the blue). Just sounds like a bad night for rolling I guess. If your shit was real either 1. you have been rolling too much or 2) you were not in the right state of mind to have the drugs take thier course.
As for your markings, Your guess is as good as mine. I do not know of anything that would have made that reaction with no other symptoms.