The Kern River wrote:

One of the few "brute force" success I ever had was when i removed a
broken wooden blade from a carbon fiber oar shaft where the blade had
been GLUED into the shaft. Obviously no amount of WD-40 or twisting
was going to get that off, so I connected some spectra to the blade
and tied that to a tree. Tied another piece of spectra to the oar
shaft (needed to use a clove hitch) and connected it to the front tow
hook of my SUV. I made sure that the force I was about to put on the
blade/oars was aligned with how I wanted the blade to exit, put the
SUV in 4wd low lock (excessive, any car would do) and eased back on
the clutch. it worked surprisingly well, though I though for sure
something would break and lurch into the bumper of my car.

Reminds me of the boy scout leader we had who used a similar approach.
He used his Landrover to pull out the cracked axe shaft from an axe
head. Tied one end of the thing to a tree, the other to his car, and
started to drive... pulling down the entire tree. Good thing it didn't
fall on his car. :-)

We used axes with a wedge in the shaft from then on.

--
Wilko van den Bergh wilko(a t)dse(d o t)nl
Eindhoven The Netherlands Europe
---Look at the possibilities, don't worry about the limitations.---
http://wilko.webzone.ru/