Yes. However, as far as I know, when firing the Kh-66 the radar operates in a fixed beam mode. In that mode it will point straight ahead. The piper on the hud will indicate that.
Now, the missile uses the straight ahead looking radar to guide itselfe down to the impact point.
EDIT:
Apparently, you can lock a point on the ground with the radar. If you don't deviate to much from course, the radar will maintain the lock.
After launching, the Kh-66 will then ride down that radarbeam and hopefully hit the target.
There is no "locking" of the target. You keep the piper over the target by flying the plane. Therfore the radarbeam will be on target. And that's what the missile is using for guidance.
Hope that makes it more clear! :smilewink: