Actually, it's not too special if we look at their opponent, Man United, it's like that, what more can we expect. And previously, Tottenham also couldn't beat Arsenal and Newcastle. It's just that, we know how Man United is, even though they're not that good, but they're still always considered a big club. That's why when Tottenham beat Man United, it felt very special. But you're right, we are still waiting for the next big matches again to see if Tottenham has really increased significantly well or not.
Source: Manchester United
Anyway about Man United, in the final Man United won the appeal against the red card received by Fernandes. See this will really chance the performance to be better again?
When i watching the video about this incident i personally too feel the referee is over reacted this because the fault is purely unintentionally and at that time i just feel Bruno Fernandes didn't deserved to gets the red card but finally FA has been release the statement that the referee on this match is did a mistakes so Bruno Fernandes red card is cancelled which mean he will be available when Manchester United will fight against FC Porto on Europa League and against Aston Villa this weekend
I know this statement will not change the result match against Tottenham because although the red card is cancelled but Manchester United is still lost from Tottenham but at least Bruno Fernandes will not absense because Bruno Fernandes is important player for Manchester United and losing him will have an effect to Manchester United performance