There are lots of different varieties of brewing yeast, some are palatable while others taste disgusting. None will do you any physical harm.

The Belgian beer Jim Dixon spoke of would have a palatable variety used as finishing yeast, but if you drink beer with some primary fermenting yeast still in it you will spit it out before you swallow it anyway.

The beer you mention sounds like it's not home brew, so it would need to be left in the sun for a long time before it built up enough pressure to explode, and even then it probably wouldn't.

You've got nothing to worry about, chill it and drink it.

John