Default Schema Problems on server
Sorry to say it, but best practice is to always qualify object names with the schema anyway.

This is mandatory for things like schemabound views.

Why is it best practice? See this by Tibor Karaszi or this by Midnight DBA or just trust me or the MS SQL Server Best Practice Analyzer

After comment...

Have you considered synonyms to make OtherSchema.mycode point to [DOMAIN\Glen].MyCode?

CREATE SYNONYM OtherSchema.mycode FOR [DOMAIN\Glen].MyCode