Came across this thread. I love this site. (https://overgrow.com/t/how-can-i-hold-clones-in-stasis-the-fridge-method).
Step 1. Print link above.
Step 2. Visit neighbor with printout.
Step 3. Help neighbor properly take clones from both male and females, save until after outdoor harvest. KILL MALE PLANT!!!. (Very important step)
Step 4. Regrow a couple male & female clones in separate space, harvest pollen, make seeds, harvest seeds.
Step 5. Plant seeds March/April, grow until sex is known.
Step 6. Weed out males and give neighbor healthy, FEMALE babies for his backyard grow.
In theory this should work. If not, I’m linking up some PVC pipe together, stretching it over the fence and into the root system in the middle of the night, pouring something strong down the pipe to kill it by morning. In theory, this will work too! 
LOL