There is a lot of speculation around the interpretation of this spell. Lots of people are differentiating between a 'surface' and an 'object' as mutually exclusive e.g. A table is a surface because it is specifically mentioned as an example in the spell as a surface. In doing this casting the spell on the table negates the 'object' rule of movement whereby the object cannot be moved more than 10' from its origin. My interpretation is that a table is both an object and a surface therefore must comply to both set of rules. Similarly a wall is a surface but if you cast it on a brick wall then remove the brick the glyph is inscribed upon, you've changed the nature of the 'surface' to an 'object' therefore the spell's rules change.
Is there a way I can fairly easily determine which way the spell works, or have I missed something?