Singapore Airlines is the master of public relations.
My guess is that this pilot will be politely told to leave and the story will die a natural death. The more punitive action SQ takes the longer it will be drawn out and in these types of cases its in the interest of both parties to kill the story ASAP. Do you honestly think that SQ is any different from other airlines and that all its staff are pure as the driven snow? I personally know of one pilot who left SQ and joined another airline where it was soon discovered he had a problem with drink. I'm sure there are more.
Anilv