You can find the article here http://rickthomas.net/the-danger-of-the-cross-centered-life/
An over-focus on the cross, to the exclusion of the other aspects of the Gospel, can lead to an off-centered life. The cross of Christ is powerful, essential, climatic in a unique way, and no person can go to heaven without interacting with the purposes of the cross.
The cross of Christ is a significant event in the Gospel narrative. Without the cross our sins would not be atoned and we would still be guilty, waiting on eternal judgment and banishment to hell. Needless to say, the cross is not expendable. Without it there would be no Gospel. It is perfectly placed in the history of the Gospel.
