To clarify, the spider thing was particularly manifested in superhuman climbing ability. I was able to climb up sheer masonry that would be "impossible" in a normal mental state. (This was over 20 tears ago, before I had any children. Please be sensible

) On the first occasion I was able to find tiny fingerholds in the pointing of the brickwork while scaling a corner of the house. On another I could see the precise energy paths of the different possibilities for climbing up the slight irregularities in the rendered and painted surface of masonry.
On both occasions I attempted to replicate the feat the day after coming down off the mushrooms and it was not possible - my fingers would simply slip off. (Sorry for 'slipping off' topic a bit, btw!) My hypothesis here is (as I strain to return to the matter in hand) that it was the purge of tears that stripped away the barriers between my egoic day-to-day mode of existence and the levels of oneness where these more remarkable things become possible.
Some may argue that this seems rather far-fetched, but if one considers for a moment, for example, a circus artiste who rehearses their skill eight hours a day for years on end they achieve a oneness with their art and their materials that allows them to perform feats which are impossible for the rest of us. Induced neuroplasticity seems on occasion to provide a shortcut to unexpected manifestations of skill. (Although, it has to be said, I did spend a considerable proportion of my childhood in treetops... predisposition clearly gives a significant advantage.)
Edit: there seems to be very little information about the specific qualities of baeocystin other than that it appears to be active at a similar level to that of psilocybin. A year or two ago, Paul Stamets hinted that there was something very special about baeocystin but precisely what I'm yet to find out. Hopefully this will guide your search a little, VM.
Do these tantalising experiential hints suggest that some combination of psychedelic neuroplasticity and empathogenicity is the key to deeper transformation? It reminds me of how the underground psychotherapists reported favourable results from following up MDMA sessions with a psychedelic like 2C-B or TMA-2. Is that what is occurring in the psilocybin/baeocystin package? And what of the role of the even more obscure norbaeocystin?