Out of interest, and only if you have the stats to hand, did Spurs attendance suffer because of relegation? Newcastle, for example, have been relegated a couple of times and their crowds have barely suffered.
75/76 - Div 1 - 27,836
76/77 - Div 1 - 30,173 (relegated)
77/78 - Div 2 - 33,417 (promoted)
78/79 - Div 1 - 34,902