on the main menu theres a customize option, and in there the top option is 'edit team' however its always been greyed out for me.. anybody know how to ungrey it?

If you're in campaign, go to Clean Bowl.

Click the save button in the bottom left.

Click export team.

You can now edit that team exported.

A few things:
You cannot play the edited team in anything other than one-off.

There are no limits on team power. You can have a team of all level 7 players with perfect stats. The team can have all the rerolls and cheerleaders. The only result is the team having an abnormally high value (4000+).

It took me a while to figure out too. Found the answer in p40 of the manual.

so there is no current way to hack the campaign team stats?

There is a way to edit team stats. For that you need an SQLLite editor, please see:

bloodbowldigital.com/index.php?option=com_content&view=article&id=114:modifying-the-attributes-for-the-stock-teams-and-players&catid=29:data

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In case anyone needs them and can't be arsed to alternate between the savegame database and main.db. This is for the idSkill_Listing when adding records into Player_Skills.
I frankly don't know what all the skills do but you canl always experiment.

Cheers.