The Houston Dynamo, playing with 10 men, pulled out a breathtaking 2-2 tie with the New York Red Bulls on Saturday night at Robertson Stadium, using a last-minute goal from substitute Brian Mullan to thrill a crowd of 24,750 and spoil the Major League Soccer debut of French superstar Thierry Henry. The crowd of 24,750 was the 10th highest in Dynamo history at Robertson Stadium and a season high, more than New York’s crowd of 20,312 for Thierry Henry’s debut on