Revealing mistake: After the Deathmobile ramming, when all the grandstand participants are in the heap of broken two by fours, you can see several chainsaw gashes in the structure made by the crew in order to pre-weaken the grandstand and facilitate its collapse.
Revealing mistake: When the people from the grandstand are flying up in the air after the Deathmobile hits it, you can tell they used a trampoline to get the effect as the woman are in their stocking feet; it would have been a safety issue if they jumped in high heels.
Continuity mistake: When Neidermeyer is yelling at Flounder about his pledge pin, Neidermeyer is spitting the P's in Flounder's face. When this happens, the camera is on Neidermeyer and if you look at Flounder, (even though it's his backside), you can see his eyes close everytime he's spitted on. However, afterwards, the camera changes to Flounder instantly, and his eyes are wide open (as if they never closed at all). Nobody's eyes instantly open THAT quickly after being spat on.
Continuity mistake: When the authorities and moving crews are clearing all of the junk out of Delta House, we see a workman with a hammer removing the fraternity symbols from the house's upstairs railing. However, the symbols are not in the correct order: They read "Delta Chi Tau," and the workman is removing the "Tau" from the end. Moments later, we see the workman still removing the fraternity symbols, but now they are in the correct order, "Delta Tau Chi," and he is removing the "Tau" again, but removing it from the center.
Revealing mistake: When Bluto first watches the sorority girls on his ladder, he moves to the left screen. As he is moving the ladder, the curtain in front moves too. The glass pane is not present, likely to prevent reflection of the camera.
Answer: There's no indication that the Deltas didn't face legal ramifications from their actions at the parade, nor that Pinto didn't get in trouble (when we last see him, he's literally being chased by the mayor). The film ends at that point and, although the film provides title cards telling us what happened to the characters far in the future, we don't see the immediate aftermath.