So often seen celebrating last-gasp goals like a schoolboy, Ferguson watched as Clint Dempsey swept in Tottenham's equaliser three minutes into stoppage time after Robin van Persie had given United the lead midway through the first half.
Ferguson appeared happy enough with a point after testing afternoon in freezing North London, although he offered an icy blast towards the match officials after United had not been awarded a penalty when substitute Wayne Rooney was tripped in the area by Steven Caulker.
"It was a clear penalty kick on Wayne Rooney but in no way was the linesman going to give that," he told Sky Sports.
"He gave them everything else. We have not had a good record with this linesman, against Chelsea a few years ago he gave onside to Didier Drogba who was three yards offside, you remember those things."
"We did so well at everything and we kept heading it out, the disappointment is not finishing them off," said Ferguson, whose side begin the final 15 games of the season with a five-point lead over Manchester City.
"We had a lot of opportunities on the counter attack but our final ball let us down.
"Tottenham were very committed and aggressive. They worked their socks off and you've got to credit them for that. They kept pumping the ball in the box and got their reward."
United have been free-scoring this season, netting 56 in 22 games before the trip to White Hart Lane. But this was a rugged defensive display after Van Persie's 18th league goal of the season had given United a 25th minute lead.
Tottenham manager Andre Villas-Boas' side have lost only once in 11 league games and Sunday's draw, following up on the 3-2 win they achieved at Old Trafford in September, will fuel confidence that they can finish in the top four.
"It was a big relief. I thought we dominated the complete game," the Portuguese, who has impressed in his first season at White Hart Lane, said.
"We could not get in behind them a lot but had 15 opportunities. We have talented players and we gave them different problems, the team came out very strong in the second half.
"I think the boys have embraced the spiri
