Suddenly for no apparent reason, Lim Swee Say was moved to East Coast and GY was retained at Aljunied. Apparently the decision was taken by LHL, TCH and WKS. No one knows the rationale for that decision.
There are 2 theories going around:
One, they didn't want to sacrifice Lim Swee Say and wanted a safe seat for him.
Second, some sections in the PAP believed that GY was gaining international stature (much more than the PM himself) and wanted to cut down his size. He was also considered to be GCT's man and LHL wanted him out respectably.
One should also note that it is only GCT who is making statements supporting GY. LHL is conspicuous by his silence on GCT. LKY's threat to Aljunied residents (leaving residents confused as per GY) is actually sounding the death knell for GY.
So, PAP wants GY to lose.