The whole thing was shown on one of the news channels (I don't remember which) but the driver was still in the van tyring to start it. The guy that pushed the van was a pillion passenger on a motorbike that was stopped behind the van. He jumped off the motorbike and ran up to and pushed the van clear. I agree he should of moved around the side of the van, but if he stayed where he was behind the van, then he would have been hit by the train. The train driver and guard both went over to the guy that pushed the van and looked as if they were talking to him They shook his hand then went back to the train. The van driver also came around the train and spoke to the guy that had just saved his van.
This site will show you a bit more.
http://www.youtube.com/watch?v=2YTxUjTBEPc