This is somewhere between a bug and a feature request.  Maybe queries with :include => should just ignore it until
SOQL can handle this kind of stuff correctly.

>> asset = Asset.find('02i60000XX0YIzHXXW', :include => 'account')
ActiveRecord::StatementInvalid: ActiveSalesforce::ASFError: MALFORMED_QUERY: 
SELECT Asset.id AS t0_r0, assets.contact_id AS t0_r1
                ^
ERROR at Row:1:Column:17