No
Shore Guy:
No.
The reason for following the RA instead of the controller is that an RA is an instruction issued after an agreement or "contract" has been reached between the two aircraft's TCAS's. One has agreed to descend and the other has agreed to climb and each will instruct its pilots accordingly.
If the a/c that has been told to climb decides to descend it will descend into the airspace that the a/c that has been instructed to descend into is descending into. Hence the recent collision.
It should be noted that TCAS is the last resort.