Something about "you should apply" vs "you should invite us". Noone wants to bow to another and then tension raised over it. Seems pretty believable to me, especially with what was going on domestically

IMO, the new council they have made in Rome in 2002 (NATO-Russia Council) and its predecessor (Permanent Joint Council, 1997) existence should have stopped the farce with "oh no, they are expanding", and a start of joint cooperation. Maybe not as NATO memebership, but as a new working alliance. Right after founding of NRC though, Russia decided that it wont proceed with NATO membership

Quotes of Putin from Ukraine joint press conference, 2002 (source: http://www.en.kremlin.ru/events/president/transcripts/21598)

Russia does not intend to join NATO. Russia, as you know, is engaged in a very constructive dialogue with NATO to create a new Russia-NATO structure “at twenty”, in which all twenty countries will be represented as nations, each having one vote, and all the issues will be solved without prior consultations, without any prior decisions on a number of issues being taken first within the bloc.

And a curious snippet

I am absolutely convinced that Ukraine will not shy away from the processes of expanding interaction with NATO and the Western allies as a whole. Ukraine has its own relations with NATO; there is the Ukraine-NATO Council. At the end of the day the decision is to be taken by NATO and Ukraine. It is a matter for those two partners.

Guess money and power do change people.