I don't enjoy hearing bands ending a tune in a messy way - and I'm sorry to say this happens all too often. At worst, some of the players in the band think they are on the Out-Chorus and play an 'ending' while others keep going into another Chorus. The result is a shambles. Another type of messy ending occurs when one or two clever-dick players at the end of the tune take it upon themselves to play a few extra notes or start a two-bar or four-bar 'tag', forcing the other players to snatch up their instruments and try (unsuccessfully) to give the impression this was intended.
So this is a topic every band should talk about. A policy should be agreed.
The simplest solution is the 'chopped' ending. I like this. For example, every player stops dead on the first or third beat of the 32nd bar in a 32-bar Out-Chorus. This always has an impact, it sounds dramatic and it impresses the audience. Listen to the end of this performance for example: