If you look closely, it seems they WERE using a spring compressor. You can see the shiny hex head at the bottom centered on the spring. This isn't a strut or coilover suspension, so they were using the type of compressor that you put through the center of the spring. Either they didn't install it right, or the compressor failed...
'06 #101409 - Sold to move to Germany
'08 GXP #105359 - Bought and stored for 10 months before I moved back from Germany!
Stored AGAIN for two years instead of bringing it to Russia