Really liked that article...was pleasantly surprised to read that Leonov acted on his own to lower the pressure in his suit
By how much, and to what?
This could still be rather dangerous. The partial pressure of O
2 at sea level is about 21.3 kPa or 3.089 psi. A suit pressure below that would represent a higher altitude. Depending on Leonov's physiology and conditioning, he might or might not safely tolerate it. As pilots know, hypoxia can be very insidious and severely affect your judgment without your necessarily realizing it.
Of course, getting stuck outside on an EVA would still be worse, so...