Their chances are high now to get away from relegation zone as they have one game less than the teams in relegation zone and are 5 points ahead.This can be considered a season savior for them as with their really poor performance of the season relegation would not be distant.Nothing is finished however as there are still many weeks to play and Union Berlin needs to do their best and score more points than the teams in relegation zone as the only solution to escape relegation zone.
For me, if Union Berlin is not able to score more, it would be better to consistently maintain a draw, but if it is able to beat the opponent easily, it would be better to score more.
I say this assumption because in this way Union Berlin is able to add points and immediately avoid the relegation zone and for me Union Berlin opportunity is still very big as long as it has good changes from now on.