There are many synonyms for the phrase "gotten on a technicality" that could be used depending on the context of the situation. Some possible alternatives include having been granted a reprieve through some form of legal loophole or quirk, getting off on a legal technicality, or having been cleared due to a procedural mistake. Other terms that might be used in this context include loopholes, technicalities, or legal loopholes, all of which imply a less-than-satisfactory outcome to the situation. Regardless of the specific terminology used, however, it's clear that getting off on a technicality is often far from a just or fair resolution to any legal dispute.