Do not disconnect the wires. Way over complicated. Follow the OWC instructions instead: unscrew the single Torx T6 screw and then wiggle the airport card off of its socket completely. No need to remember markings or add warnings about sensitive cables. Very easy step if done as described.
I did it and it took me quite a while. However, this was exclusively because the SSD 2,5 to 3,5" bracket did not fit well. I spend a lot of time finding alternatives and even trying to get SATA extension cables.
In the end I decided to agree with anonymous on Sept 26 2012: a pivoting SSD is good enough. Now installing and everything is going fine.
Really happy with the instructions and tools that I bought from iFixit. Next up: 27" iMac, fitting a secondary drive in there is what I am up to. Yay!