Sure you can do stuff after 236a/b/c in the air, you just have to be high enough for the move to actually recover, which was quite a long time in CT, i'm not sure if it has improved in CS
Although I do not think this combo would be possible, unless you already have poles setup on the ground beforehand (unless i'm missing something), and even then, the recovery on j.236a might be too long to activate air sword iris before the opponent recovers.