Those were some great strains!
The deformation of its stems is still visible on some of the newer PE versions,
heres PE uncut, its by far not as strong as the OG PE but still present.
Here they have an earlier version of PE, the stipes look just like the ones in your grows
they have multiple pictures on that site.
Funny that you sent turds "caviar of poop" to friends for them to grow with them ^^
The idea posted here to use the pressure of a closed syringe to force water into the spores sounds actually good, activated charcoal is here and used in some of my plates, mostly for coloring but I did read that charcoal works as germination booster and slightly anti bacterial so that will definately be one of the things to try - syringe suppressed spores on low nute- charcoal agar.
The freezing will be tested too since it at least worked for the Rusty Whyte spores.
Is the isolation in the archieves?
The link on side one didn't work