Thanks for the DIY, it helped when I replaced front suspension yesterday. The two clips for the speed sensor were a pain so I took some pictures trying to provide more details.
The top clip has 4 hooks (one of each side) and all 4 need to be pushed in while you pull the clip out using your fifth hand
The picture shows the top and bottom hooks with green arrows and one of the side hooks (the other is on the invisible side) with a blue arrow. The side hooks (blue) may be a bit ahead of the top and down hooks (green) so you may try to squeeze the side hooks first, pull the clip enough so that you get past the side hooks and then squeeze the top and down hooks and finally pull the clip all the way out. I don't remember how I did it exactly, I just remember cursing.
I replaced the whole struts so I needed the clip out. But if you just replace the springs you may (and you should 'cos it's muuuch easier) leave the clip in the strut and just remove the wire from the clip. To do this, slide the screwdriver between the two tabs (marked with red and yellow dots in the picture) and push the red tab to the left. It will move easily and pop out so you can remove the wire with the rubber bushing out of the clip.
For the bottom clip it's easier, it just has 2 tabs on top and bottom (green arrows)
Florin