I also broke the blue retaining clip while trying to pry the clip out, I had to replace a whole new fuel line which cost me about $58 + tax from the dealer.
When I got the new fuel line, I played around with the quick connector and found out there is nothing hard at all to remove it. You can remove the connector within 5 secs. All you have to do is to press down the top (oval) side of the clip (not the flat side) with your finger then slowly pull the fuel hose out as the clip is in the opening position when you press down the top side. It is easy isn't it