Yes,
Dont ever doubt it was Russian pride that killed them. Russians have a tendency to be fatalistic about things, and suspicious of everyones motives. Russians in general do not accept charity, since they dont believe in it like we in the West do.
What is a shame is that they are stilling trying to pin responsibility on Western nations, saying collision with a foreign sub was a likely cause... except, that collisions don't cause that massive of damage. From what the Russians have given up, the crew had begun a routine torpedo loading and firing drill, and then something bad happened.
Most likely reasons are that one of the torpedoes malfunctioned, and possibly even detonated. The other is that it collided with a WWII era mine. That are of the Barants sea was heavily mined, and though the possibility is remote that one has survived in a functioning state all this time, it is still possible.
My opinion is that low morale and funding of the Russian Navy lead to laxed procedures and maintenance of weapon systems, and during that military exercise (the largest naval exercise, I believe, since the wall came down) a piece of equipment failed (most likely torpedo) which lead to an explosion.
There is thread on the board right now that asks "What does hell look like?". Well, I'd have to say spending your final days hundreds of feet below the surface with 23 men slowly dying in the dark has to be a runner up.
~My $.02.