Thanks to our friends at UMBC for posting the video on youtube.
Alan Webb's 800m race captured from about 10 feet in front of where he fell:
http://www.youtube.com/watch?v=PDOA6-yqGTI
The UMBC guys talked to Webb afterwards. Said he did a workout after the race and wasn't upset.
The video is on the channel of IC4a triple jumper Shioma Obemeata and was shot by Matt Davis.
More on LRCs love for UMBC here: