No, it has everything to do with the combination. It was an almost lethal combo, not because I almost jumped out of a window but because of the effect it had on my body. The only thing I can relate it to is some kind of seizure like event where I completely went psychotic in a sense, essentially blacking out (I did black out for a minute, or two, or three, I don't really even know). If you are inferring the heroin had something to do with it, not at all because I had last dosed almost 10 hours prior to doing the 100mg line of MXE and 300 or so micrograms of 1p-lsd.
I have taken MXE many, many, many times, in very high doses, and I have taken 1p-lsd three times. Never have I ever experienced anything close to that on their own.