Contolling Hairpin spans again

[Peter Gentry]

I would like to reduce the span of the hairpin in the third bar so that it does 
not reach to the crotchet - is this possible?

I have searched the LSR (in a previous search for hairpin I did not notice that 
there was a second page after the long blank space
on the first page).

\version "2.16.2"

\relative c'' {
 \clef "treble"
 \time 3/4
 r2  e4\pp-\tweak #'minimum-length #8.0 \< ~ 
 e2\>  e4-\tweak #'minimum-length #6.0 \< ~   
 e2\> e4\!  |  % this hairpin is too long
 d2.  
 }

thanks
Peter Gentry