I've got a early 2009 17" MBP just extensively serviced by Apple (new logic board, display, etc.), and I've noticed that when closed and I pick it up and put it down on a table, the apple logo glows for a moment and goes out. I'm convinced that this has something to do with the built in Sudden Motion Sensor that wakes up the computer. It seems to have started with Lion on my particular MBP.

http://en.wikipedia.org/wiki/Sudden_Motion_Sensor

I suspect that the author of that blog may be seeing the same thing and it has nothing to do with keyboard problems.