Holy crap, there's another hatch right underneath the drug smugglers' plane. And at the bottom... the Architect!
Actually, there's a videotape... but Dr. Marvin Candle called himself by another name this time. The Pearl (station 5) is monitoring all of the other stations, including the Swan... and "Dr. Candle" said that the people at the other stations believe their task to be of the utmost importance.
In other words, it looks like the 108 minute countdown is, as many have speculated, a bunch of Skinner rat BS.