Another Version??

In the late 60's or early 70's my wife and I went to a movie theater and saw The Birthday Party, but not the version listed in IMDB. For example, in the version we saw, McCann tore paper through most of the movie - in the car, while seated on a sofa. In the "groin kick" scene both men were standing. Does anybody know about this version. It wasn't on TV. It took me almost a year to get the video listed in IMDB and then it wasn't The Birthday Party I saw.