I'm sober now. I still have the same opinion. ![Smiley :)](http://www.homebrewersassociation.org/forum/Smileys/default/smiley.gif)
If you want better foam and/or body, you need to use RYE. Chit malt would also work, but I prefer rye.
I did like Denny's Wry Smile, and the head retention was outstanding. Actually, the whole beer was outstanding. It was such a different brew than what I've been doing I'm not sure I can attribute any one thing to the head retention. The yeast smelled like grape candy for instance...
I'd suggest you brew the beer without it this time to see for yourself before adding in a new variable.
That's an interesting idea too. I hadn't really considered leaving it out. I guess I'm not sure just how much of a difference some of the smaller adjunct additions actually make. Small amounts of crystal malt always seem to darken things up considerable but understandably, not all grain is the same as crystal.