An Erudite can select powers freely from the psion/wilder lists, and from all the discipline lists with certain caveats.
A StP alternate class feature Erudite can learn spells, converting them to "spellpowers" with the same caveats as discipline powers; they count as powers.
The Expanded Knowledge or the Hidden Talent feat clearly allows the acquisition of any one power from any list, with certain caveats.
Are there any non feat methods which legitimately allow an Erudite to acquire other non-psion/wilder powers (Lurk powers, Leech powers, mantle powers, etc.)?
Please do not include anything involving Manipulate Form, or similar levels of TO.