Mas Selamat cost ISD Superintendent his job?

Mas Selamat, Singapore most wanted man is still at large....The findings of his escape has been released and people are gunning for heads to roll.

The ISD Superintendent was sacked. But did the escape cost him his job?

From the report, we know that it was his decision to saw off the window's handle when it was found that the grilles was not fixed. How intelligent is such a decision? At Superintendent level, surely there should be a level of common sense and intelligence.

How did a person who is capable of making such a decision reach that level of authority?

Perhaps there are lessons that we can learn from this incident too.