Rory noted the wallride marks on the Pillar in the “Dan Hetrich – Backside Disaster post“. Someone commented that Maldonado made them. I believe it, however I do know that Fritz has gotten his dirty wheels up there as well. See the video below from Nick Zegel:
Philly Skateboarding from Nick Zegel on Vimeo.
That video is awesome, especially for only being a 1 day session. Fritz kills it.