He couldn't help but be proud that he got his teacher on the first try. A long time ago, Draco probably would have left his teacher there just for the sake that he could. However, he did make Remus wait a few minutes before he finally reversed the jinx.

Even though he freed Remus, Draco held his wand out ready to block an unwanted spell just in case. He knew how Remus can be rather tricky and hard to predict.