Gregory Freeze gives an example of how Yeltsin encouraged centrifugal tendencies in order to increase his own power vis-à-vis Gorbachev:
Excerpt taken from his book Russia a history, page 470:" In his struggle with Gorbachev, Yeltsin himself had encouraged centrifugal tendencies by urging local authorities to withold taxes and act on their own - most vividly telling the leadership in Tatarstan in 1990 to "grab as much sovereignity as you can swallow".
Thus Yeltsin was willing to go very far, even to the point of weakening his own country, in order to increase his own power.