Comrade, you see back in old days, a strong Soviet man might have to fall out of window 30 or 40 times before finally succumbing to injuries. Minor improvements in window falling technology improved this over time. Improvements like feeding political enemies high calorie foods thus making them heavier. Also promotions worked for many. By first promoting the unfortunate soul, you could insure that they lived on a higher floor or had a house with a 3rd story. However, all of these solutions took much time. It wasn't until 1 brilliant pioneer realized that if the unfortunate accident victim first broke neck before falling out of window, then even the sturdiest of men could fall out of even basement window just once.
Unfortunately there isn't actually much evidence for this being true, just some stories told by Russian soldiers who already hated and feared the guy. There were a lot of myths around the whole thing that mostly seem to be bs.
Basically "oooh big magician guy ... scary, woooo... did you know the youngest daughter survived too?"
That said, I do not believe they attempted any window-hurling, that probably would have been a good test for magical powers.
No way, that would be ridiculous - instead they fall out of the next window down, which is like a totally different window. Possibly somehow along the way they also manage to shoot themselves in the back of the head, before falling out of the next window or down a flight of stairs. It's still a "suicide" though, if you know what's good for you (and your family).