sean weimer is placed under arrest. he temporarily loses visitation rights with his daughter, who remains in her mother's custody. he's charged with felony child abuse. he pleads guilty and is sentenceded to two years of probation. when store owner albert abbas views the footage captured by his security cameras later that morning, he's blown away. >> when it first happened, i couldn't believe it. i mean, to hear them tell me the story was one thing, but then to actually see it on video was a whole other ball game. it was absolutely ridiculous. >>> coming up -- a snowboarder tries to outrun an avalanche. >> he went from riding as high as you can be to instant fear. >>> and a daredevil on a snowmobile goes tumbling. >> it was like losing my brother right in front of my eyes. >>> a snowboarder takes off. >>> a snowboarder takes off. >> i just knew that the mountain was coming down. >> go, go, go, go, go! >> and must outrun an avalanche for survival. summit county, colorado. the mack family lives here amid the rocky mountai