I was told by the crew that was supposed to take the aircraft out that....
Outstation MX was working on the aircrafts brakes and the MX procedure form from our MX said to pin the gear and move the gear handle to the up position (maybe to check the retraction brakes? I don't know). Unfortunately the outstation mx guy pinned the mains, but not the nose and it collapsed. The bad part was the nose never impacted the ground, but rather the boarding door was open and caught the jetway and the whole weight was supported by the door.
I saw the pictures from this crewmember, the gear doors didn't even hit the ground, a couple of anntenne did though. Don't know if the fuselage was tweaked or not with all that weight on the door. I flew down the next day though and did not see the aircraft, so I am assuming they at least got it flyable to ferry it.