can Keep_alive_together_engraver be temporarily suspended?

[Kieren MacMillan]

Hi all,

I have

  PianoStaff
  <<
    Staff
    Dynamics
    Staff
    Pedals
  >>

By default, the PianoStaff \consists “Keep_alive_together_engraver”, and this 
is generally perfect for me. I have one section of my current score in which I 
would like to reduce the piano part to just the upper staff.

I tried \remove-ing the engraver, but a lot of horrible things happened (e.g., 
the Dynamics disappeared!?), and in my current deadline crunch, I don’t have 
time to properly bug-fix that if there’s a quick way to just pull out the lower 
staff for a few measures.

Thanks!
Kieren.
________________________________

Kieren MacMillan, composer
‣ website: www.kierenmacmillan.info
‣ email: address@hidden