Not an OD. This happens. Most certainly a part of the experience.. "Akin to a dream" as they say. "Like sand through the fingers" as others say. Very true statements in that regard though.

Once in awhile when I have those "Whoa WTF, I'm never touching this stuff again" type experiences I'll tend to listen to the same music that was playing during that time (or what I can remember of the music as in heavy breakthrough its nearly non existent) days after the experience subsides..... and to some..listening to the same tracks over and over throughout your day to day might get old, but for me they trigger very clear memories of some of the key points underlying those real intense breakthroughs.

Now I'm not saying that'd work for everyone but it helps my memories of those experiences to surface. Sound/vibration are key.

I think a good deal of amnesia stems from some left-brain/right-brain incompatibility. For the record, this is just a half-baked theory but the DMT experience seems to be a predominantly right-brain kind of experience in the sense that it is visual, symbolic, wholistic...As most of us experience reality dominantly through the left-brain (ego) relying heavily on language to break down reality into its individual components with analysis and labels, I believe that the information that is processed in hyperspace is largely incompatible with linguistic analysis and therefore becomes difficult to consolidate into everyday memory. Going off what Tek was saying in regards to McKenna's strategy (which I use often, even though I never heard McKenna talk about it), is that if you cannot get the ego to engage the sensory information sufficiently while the experience is taking place, then much of it will be lost. Additionally, much of everyday memory is based much more heavily on expectations of how things probably went as opposed to actually remembering it for what it was. People who haven't journeyed much (or who get a much heavier journey than usual) have particularly weak expectations and poor labels which make for particularly weak memories.