Paul McCartney

is so desperate to ditch his trophy wife, he'd just about pay anything to get rid of her.

The operative phrase is "just about pay anything." Not everything, of course, though Heather would love to have a lot bigger chunk of his fortune than a piddling 50 million pounds.

And:

And far from backing off, the News of the World can reveal how furious Heather this week turned up the heat—and accused Paul of trying to spy on her private life.

She hit the roof after finding secret logs of her movements compiled by the star's security team.

The dramatic escalation of hostilities erupted after Heather found herself locked out of their home in St John's Wood, north London, TWICE in a week. Last night insiders said Heather feels pop icon Macca also:

# HUMILIATED her by freezing their joint bank acount.

# TRIED to squeeze her into submission by barring her from their homes.

# TURNED into a Jekyll and Hyde character, cynically switching his behaviour in public and in private.