I don't think it's supposed to be funny. It just indicates that security procedures are becoming higher, faster, stronger in Sochi, which is also the spirit of modern Olympics.

考虑到Sochi筹办冬奥以来，一直被各种恐怖分子威胁说要破坏冬奥...我想这幅画应该是想说现代奥运不仅仅是那位tiny的figure skater所弘扬奥运精神，还要加上各种安保安检设施吧

han han

前排，混脸熟。
——我寻找多年的小尾巴，你在哪里？

冬奥的问题，我看不太懂大概说安保问题吧！

First and foremost, you have to understand what it means by "the current spirit of the modern Olympics".
The purpose of the Olympic Movement is to:
– link sport with culture and education;
– promote the practice of sport and the joy found in effort;
– help to build a better world through sport practised in a spirit of peace, excellence, friendship and respect.
The cartoon mocks the tight security measures at Sochi, which are meant to ensure that the event can proceed peacefully and the spirit can be celebrated, but the very need to implement such measures ironically means that the "spirit of peace, excellence, friendship and respect" is absent from the start, and is casting a shadow on the athletes who are hoping to enjoy their games.

You are welcome. But you have to understand that there should not be a definitive interpretation of the artwork. You may also argue that the cartoon derides the idealism embodied in the Olympics spirit, which can't be "celebrated" at all without the presence of military might, ironically suggesting that there is no such thing as genuine peace, friendship and respect. Yet the security measures at Sochi are so tight that they have stolen the limelight.