Yeah, cut'em lose... tell them if they can't make the committment to just don't show up ever again. A lot of the times people like the idea of being in a band and they expect it just to happen... those type of people are just along for the ride... You won't ever get anything accomplished if you have band members like that. I know a local band that I've been close with recently had to kick their lead guitarist out because he got a night-shift job and couldn't make it to all the practices.... The guy was best friends with the lead singer and had been in the band for 2 years. That's just the way it goes. It's a business and you have to treat it like one sometimes. CUT'EM LOSE!