I don't think that the 20/10 has only 5 days in a row, most probably it'll be just like every other 20/10 like Ethiopian for example, 20 work days and 10 consecutive days off, or 25/12, otherwise it makes no sense.
The fact that they moved people without any other choice is not the best way of doing things and most probably, the guys in RUH will also lose all the nice long flights like YYZ MAD MAN and others and most probably sooner or later they will leave.