I have read but not interacted with this forum for a few years but I saw this incident clearly at the track and felt compelled to offer my view.
I have witnessed well over 1000 heats of speedway at all levels at the EWR and many thousands of heats of speedway over a period of 45 years.
The line and speed that RT took after the race was extraordinary, particularly so when unforced. RT was in control of his machine and had his wheels in line for the straight immediately before the collision. As he drew level with Auty, Tungate visibly forced his rear wheel into a slide towards Auty. Auty maintained a straight path and was apparently unaware of Tungate's approach as he acknowledged the crowd. As this was so close to Auty it was a dangerous and very unusual manoeuvre and could only cause Auty problems. It was too close to spray Auty with shale as some posts suggest. The momentum and line of this slide is clear to see on the video after connecting with Auty and indicates the same. This coming together could have been easily avoided and the result of Tungate's action is to have injured a fellow rider. Tungate was almost 1/4 of a lap behind Auty at the end of the race and clearly in those few seconds after he had a mind to catch Auty, perhaps with an intention to engage in some way with him. In fact he did.
We all know the serious risks that riders take when racing, but these risks should not continue after a race. This was not a racing accident but an avoidable incident which occurred a significant distance after the end of the race.
The SCB must make it absolutely clear that this kind of action will not be tolerated.