http://www.fosspatents.com/2011/08/apple-is-also-suing-motor...
http://www.fosspatents.com/2011/08/apple-is-also-suing-motor...
http://www.fosspatents.com/2011/08/proof-apple-attacked-moto...
Motorola filed the first suit.
Even in the article you have linked, the author says "...why my position is that Apple attacked Motorola even though Motorola technically won the race to the courthouse". Irrespective of what the author thinks went in the background, he admits Motorola filed the suit first.
Your own link states several times that Motorola was trying to pre-empt the attack and that Apple's attack was 'long awaited'. Do you really think Apple was not the patent aggressor in this case?
Why could it not be the other way around? Maybe Apple was preparing in secret, fearing a law suit by Motorola. That is equally plausible.