\version "2.19.34"

\paper {
  system-system-spacing.padding = 8
  paper-width = 10\cm
}

\layout {
  \context {
    \Staff \RemoveEmptyStaves
  }
  \context {
    \GrandStaff
    \override VerticalAxisGroup.staff-staff-spacing.padding = 5
  }
}

\score {
  \new GrandStaff
  <<
    \new Staff = "one" \relative c'' {
      a a a a
      \break
      \new Staff = "workaround" \with {
        alignAboveContext = "two"
        \override VerticalAxisGroup.staff-staff-spacing.padding = 1
      }{
        a a
        <<
          { a a }
          \new Staff = "middle" \with {
            \override VerticalAxisGroup.staff-staff-spacing.padding = 1
            alignAboveContext = "two"
            alignBelowContext = "workaround"
          }{
            a a
          }
        >>
      }
      \break
      a a a a
    }
    \new Staff = "two" {
      a a a a
      a a a a
      a a a a
    }
  >>
}