independent spacing

[Stefan Thomas]

Dear Lilypond-Users,
I have a question concerning horizontal space in different staves.
I would like to have the horizontal spacing in the first staff 
completely independent from the spasing in the second.
It means, I don't want to have the 2nd bes at the same time as the g in 
the second voice.
Is there a possiblitie to reach this aim?
Here a short example:

kleiner = \set fontSize = #-3
normal = \unset fontSize

\relative << { \kleiner bes8_\markup {\italic "as fast as possible"} b 
bes cis \normal r2 }
   {\newSpacingSection c4 g' c2 } >>