One cannot theoretically rule out degradation of spice in any form of storage. Even within the plant material, it can be vulnerable. More so however when it is in solution; spice does degrade when it is dissolved in water e.g. as a salt, like in aya brews.
There are no much data/observations on whether spice degrades when it is kept as a freebase in some non-polar solvent, however:
People have been evaporating spice-containing non-polar solvents (such as naphtha and/or xylene) for 1-2 weeks, maybe longer sometimes with no reportable losses (or unsatisfactory end-products to be more precise).
So, one may be safe keeping it in a closed container, preferably in the dark and as cold as possible for quite a few time till the conditions are right to proceed, but it would be inadvisable to keep it as such for, say 6 months (just gut feeling).