OK, second question about longer exposures in a couple of days - I feel so dirty

The question is as simple as that - is MLU really that critical when doing longer nightime exposures, using longer then 1 minute? Wouldn't the shake on such an exposure not really bother the negative?

Now, there is a reason behind this question. I want to be able to shoot a shot using a pneumatic release from a distance away and I want to be able to hear if I accidentally let go of the bulb!! Anyhow, just a thought.