You can do it provided you are familiar with useing agar plates, as there will be contaminants on the shroom by now, they will also grow, so with the agar plates clean sections of mycelium are cut as they grow and transplanted to the next plate until no more of the contaminants travel with.... I.e. not a beginners project... why not wait a little till the guys with grows going on here now have their first harvest and ask one of them to make you a print. Its time you guys start a little entho trade ring, My local one can supply me with nearly anything I want.
However when it comes to living organisms, life sometimes finds away regarding of the odds.