Things like "Slush must do so and so" are pushing a bit too much beyond the boundaries. Slush has given you no promise to perform, nor has he signed any contract to do so. So - there you have it - there is no promise that he will do anything. He may do so or maybe not. If he does - it will be if he wants.
+1 and i would also add: when he is able to, because he is a human not a machine!
He did his best up until now and we trusted him! Now he is unable to take much care for the pool, because of more important issues - personal/family.
'Rats leave the sinking ship first' - if you are a rat, then leave. The rest of us (sailors) should trust our captain and keep the ship cut through the waves during storms ... at the end we may just not have rats on board

This is mine point of view - chose yours!