LHL has also improved a lot since the early 2004-06 days. I watched his interview with Charlie Rose. He handled it very well. He also comprehensively put down LTK in parliamentary debate with the "Do you think WKS should resign" question, and 5 seconds was all he needed to declare "Silence. That settles the issue." That's good technique.
It was the ineptness of LTK that made LHL look good. I believe LHL did not ask if WKS should resign. He asked if he, the PM, should also resign. I believe LTK was dumbstruck. Now I'm going to forgive LTK because of his command of the English language. But he could have retorted in Chinese or even Teochew.
The PM was driving home the point that somewhere the witch hunt must stop. If WKS could not shirk responsibility because he was the boss of the Director of Prison; and Director of Prison the boss of the warden who allowed MSK to slip out of the prison, then being the PM and the direct boss of WKS, should he also resign ?
LTK could have told PM that it would be honourable if he resigned too, not just because of MSK matter, but the myriad of booboos that Temasek created. A new PM should then reshuffle the PMO and relieve the tax payers of the burden to feed a couple of Senior Ministers and Ministers without portfolios. After all, a capable PM does not need so many mentors in the PMO to coach him.
LTK should also explain that the call for WKS to resign is not because "he is the boss of the Director of Prison" etc. It's because he is the Minister for Home Affairs. He is NOT vicariously liable for the escape of MSK; he is directly responsible as Minister for Home Affairs !!