No. 82-1645. Argued October 4, 1983. Decided November 23, 1983. Elliott Moore, Deputy Associate Gen. Counsel, N.L.R.B., Washington, D.C., Susan L. Dolin (argued), Detroit, Mich., for petitioner. Samuel Demrovsky, Livonia, Mich., Lawrence F. Raniszeski, Colombo Colombo, Birmingham, Mich., Alvin S. Rappaport (argued), LaJolla, Cal., for respondent. Before KEITH and MARTIN, Circuit Judges, and SPIEGEL, District Judge. Hon. S. Arthur Spiegel, United States District Judge for the Southern District of