Well yeah manchester united could still blow it up after this loss , i mean manchester united could losing the ticket to the champions league next season as liverpool keep pushing a bit harder now than before and there only 4 matches left for them and 3 matches for liverpool.
4 matches and if united keep losing points like this then ... they would kicked out of the top 4.
I think Man United will evaluate their game today and will play better in the next matches. There are only 4 remaining matches, I am very sure they will struggle all out to defend their position in the top 4. In the remaining matches, Man United will play against Wolves, Bournemouth, Chelsea, and Fulham. 3 matches will be at Man United home, it will take advantage for Man United. Since the remaining matches are only against smaller teams and even 3 matches are at home, I assume Man United possibly wins all the matches. So, the chance for Liverpool to replace Man United in the 4th place seems a bit small. However, I don't say it is impossible because there will be always the opportunity for a surprise to happen.