No. 90-1195. Heard September 14, 1990. Decided November 2, 1990. Thomas Royall Smith, with whom Pamela E. Tracey and Jackson, Lewis, Schnitzler Krupman, Boston, Mass., were on brief, for respondent. David A. Fleischer, Atty., N.L.R.B., with whom Jerry M. Hunter, Gen. Counsel, Robert E. Allen, Associate Gen. Counsel, and Aileen A. Armstrong, Deputy Associate Gen. Counsel, N.L.R.B., were on brief, for petitioner. Before TORRUELLA, Circuit Judge, BOWNES, Senior Circuit Judge, and CYR, Circuit Judge