Hello Big Jim
Looks like
Pandanus utilis or possibly another member of the same family
like
Pandanus veitchii .
I know this plant by the common name "Screw Pine"
so called for the spiral growth pattern
(it is NO relative to Pines).
They can grow to become
massive trees,
doubtless why it was planted with a lot of space to grow.
Not, to the best of my knowledge, particularly rare or valuable,
and it sure sounds like it's very badly sited for you.
Maybe you could list it on Freecycle? Or Craig's List?
Someone might jump at the chance to come and dig it out for you,
so that they can put it into their landscape
that would save you some work.