Underlying the obvious moves by SIA management to continually erode the T & Cs of pilots is one man. Lee Kwan Yew hates the pilot workforce and has done ever since they adopted some industrial action over twenty years ago. Recent events that brought about a vote of no confidence in the ALPS(S) leaders simply exacerbated the situation and the sacking and deportation of Capt. Ryan Goh was done just to show who was really the boss.
The vote of no confidence also served to reawake LKYs determination to marginalise and minimise the status of pilot in SIA and what better way to do this than attack their rice bowl and take away their money?
Not to mention officially downgrading the job of pilot to one of skilled labour, (check with the Ministry of Manpower!), and delisting it in Singapore as a profession!!!
All the time that LKY is alive the CEO and anyone else that acts to further disenfranchise the SIA pilot will have his blessing, God only knows what his son will do after the old man is gone.