The video definitly looks fake,
First of all, drivers are allerted to trackworkers possibly on that stretch of track, and will be extra vigilant, plus if drivers see any track workers on or alongside the line, they are supposed to blow there horn to let them know they are approaching.
And for the second reason, it looks like the second train clips his lower foot, this in turn would throw him slightly forward along the line, landing him in a diiferent place than were he first started.
These are high speed lines, we have these here in the UK and there are strict rules, you can cross the line and you can stand in the ten foot, which is the centre piece in-between the two lines of track, but you can't stop or stand in the four foot of the track (the centre bit of the actual track were the sleepers are) and especially around switches.
http://www.youtube.com/watch?v=09_SYzMtNlA
Above is the address for UK Track safety videos, supplied by Network Rail.
There are many different Network Rail safety videos on you tube, once you click on the one above, you'll get a selection of many others, covering all areas of track rail safety in the UK, I expect it'll be common practice around the world too.
Joe Airtime