Man United went into the break goalless at White Hart Lane but three goals in six second half minutes from Spurs meant they secured a comprehensive victory.
The result meant United cut further adrift in the race to finish in the top four and Schneiderlin admitted that his side only have themselves to blame for the loss.
“After the first goal we lost a bit of shape, maybe it was a mental thing,” Schneiderlin said.
“In the first half we had possession and caused a few problems but after the goal it happened so quickly, three goals so quick cannot happen.
“Everyone has their head down like you can imagine. No-one would have thought that after 60 minutes it would have been 3-0.
“But fair play to them they got us when we were a bit down. Like I say it is us to blame.”
Schneiderlin had performed well in the first half as he got stuck in against the likes of Eric Dier and Dele Alli.
United would have wanted to kick on in the second period and the collapse was a desperately disappointing one. The lack of fight and desire characterised the large majority of United’s campaign and Louis van Gaal’s days at the club must surely be numbered.