Same blog, earlier article: http://www.fosspatents.com/2010/12/apple-vs-motorola-now-42-...
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.