This English translation by Vympel is very interesting (thank you for finding it, I somehow overlooked it back then!), as its starts a bit earlier than mentioned Russian one and includes an extremely important phrase ("There are no close targets in the air. There are plenty at long ranges, and different azimuths"). It seems that both the jamming and intermittment operation theories are unfounded. I really need to find this book (and learn Serbian)...
There were two targets in the air (no jamming was present), in the detection range of 3/250.
Both were F-117A, and depicted in the sim.