Kevin Kolb's biggest break in his young career was the Clay Matthews' bear hug in the 2010 opener that resulted in a concussion for Kolb. Although Kolb lost his starting spot to Vick, Kolb gained financially and environmentally by the Matthews' hit.
Kolb was an unproven commodity handed the starter's job. Kolb had 2 years remaining on his contract at $9 million per year. Had Kolb played the 2010 season and played poorly, he likely never would have garnered the $9 million for 2011. The result of his injury and lost playing time is that Kolb remained the top "potential" QB on the market. With the trade to Arizona, Kolb cashed in a longer term contract with bigger bonus money without ever having to prove himself in 2010.
Kolb also increased his chances of success by moving from the highly competitive NFC East to the miserable NFC West. He escapes the red hot glare of Philly fandom and relocates to the dry heat of Cardinal fans. A record of 7-9 will get you hung in effigy in Philly: in Arizona, you've just won the division.
That sack by Claymaker was Kolb's best play of his career.