I really don't see much of a problem either. It just depends on how you're set up.
I'm the MOM as well as the lead musician. When one of the praise leaders get up, they are in control. The signal they give, is the signal I give to my musicians. Sometimes, because we all know how to flow together, they will give me that look like "stop the song"?, and I'll shake my head and they'll make the signal, then I'll make it. That comes with working together and knowing how to flow together. We don't have one person leading every praise and worship song so I've had to learn how to flow with them all.
But whatever signal they give is the one I "throw up".
Now when we're doing songs that have no lead (the praise team that is), I do the signals or I let my assistant who sings on the PT do the signals.
First, let me say that I agree with these statements. I wish musicians would gain a true understanding of their role during a worship service. When there are singers of ANY kind (praise leader, choir director, etc) the
SINGERS are in charge of the flow of the song. Period.
Now, when the band is backing up the preacher, or playing during the prayer or whatever type of transition, they can flow how the HOLY GHOST would have them flow until the preacher, or whoever, tellls them to "take it down"
As it has been stated, there MUST be a level of communication that works for everyone involved in the music department. What I just described occurs at my church and it works well.
Find what will work for your church.
Be blessed, everybody.