Finally I have seen the whole video. For me the biggest mistake is on side of Sarrazin (not only for crashing), but mainly not showing what exactly he really wants. For both Emil and Kajto he is showing them slow down or stop, but never shown anything else (everything is ok, you can go or we need help etc), only closing door for Lindholm to allow him to pass the car. So, for me, there is no clear sign that everything is ok, so Lindholm should stop on the scene and properly check the situation. Like Kajto really did.
And for me, this is much worse situation that Gryazin/Herczig in Hungary (but like I wrote in the past, solution of that situation and penalty was a big bad joke from stewards).