I skipped this step as well as step 15 and 16.
What I did, was just wiggle the drive out of the pc. Just pull it a little bit up and towards. Might need a little bit of force. But it should come out. Then, just remove the tape from the sata connector and then remove the sata connector from the hdd. Then you can replace the hdd like mentioned in this tutorial.
And I removed only the left thermal sensor. The right one can stay on unless you need more room.
Thanks, that's a nice way, works really well for me. Just try to stick a needle on the side and lift it up, if it has come up a little you can gently pull the cable and it will come off with very little force on the cable.