Yes you can do this using the BCC AVX MultiFilter controls. I'm at home this week and don't have a system, but I think I can remember. You apply the Blur to the Avid title (don't Alt or Option-apply) and select the Apply to Title Matte checkbox (in the Title Matte parameter group). If the Directional Blur has an Opaque Source checkbox (I think it does) deselect that as well. Then select the Multifilter Start checkbox. Everything looks weird for a moment, but that's okay. Then Alt-drag (Windows) or Option-drag (Mac) the Glow and select the MultiFilter End checkbox. Now everything should look correct. You don't have to select the Apply to Title Matte checkbox for the second filter. I may have gotten some names a little off, but they're all in the Title-Matte parameter group.