ANS, ATC did not level off PSA 182 at 4000 ft over Montgomery, it was the correct procedure, should be plan A.
CVR transcript after PSA 182 had reported traffic in sight to approach and switched over:
Captain (radio): Lindbergh, PSA182 downwind.
Tower: PSA182, Lindbergh tower, ah, traffic twelve o'clock one mile a Cessna.
Captain (radio): Okay, we had it there a minute ago.
Tower: One eighty two,
roger.
I have nothing against controllers at all, and have visited ATC centers and towers on 6 continents.
the standards of controlling are some of the best in the world
..
In the wise words of a now famous retiring United captain...try:
second best in the world..the best?....the rest of the world..