It's impossible for Barcelona to do something stupid like that, maintaining the top of the standings is their priority to win the La Liga title. Real Madrid will continue to chase Barcelona even though the points deficit is very far away, but Barcelona will try to make Real Madrid's efforts in vain by continuing to collect points in every game. La Liga still has 11 games left, Barcelona just needs to be consistent in the next few games to ensure a first place finish.
The super good performance shown by Real Madrid when they beat Valladolid must be maintained until the end of the season, even though Madrid failed to catch up with Barcelona in the title race, Real Madrid was able to secure second place from Atletico's pursuit.
I know some people still hope that Barcelona fail to win the title this season and Real Madrid, who are already 12 points behind, step on the gas and win the title. I don't know, I don't think it makes sense even if it's mathematically possible, but it all depends on Barcelona's form for the rest of the season.
Barcelona still has the chance to lose few points, especially if they fail to maintain their good performance so far. The match against Atletico Madrid will probably be the toughest, but it is played at the Spotify Camp Nou which will also benefit Barcelona. There are 11 matches still remain, 6 of which will be played at the Spotify Camp Nou and 5 match away from home.