General rule of thumb: When the fog is coming out of the Viking ship, halt.
The man ping-ponged off 6-foot-3, 259-pound Brian Robison and into 6-foot-4, 329-pound Linval Joseph before slamming into the turf at the speed of sound. I sincerely hope the man is OK, because that was not pleasant.
I like Joseph's reaction: "What was that? Did I just kill a guy? Should I go back? Nahhhhh."