The spfl/sfa have never planned for something like this and even at the best of times neither is fit for purpose. If this all goes tits up I think there will be massive change in the game and a few clubs will go to the wall as a result.
For my money (which will favour the rovers as it happens). End the season now there is a full round of games to go so everyone has played equal games and promote the top team from every division, we're currently top and have been most of the season. Scrap or delay until the summer any playoffs and regroup in august.