This is a really GREAT explanation of Wittgenstein and the problem with philosophical language. And I LOVE the way that you've tied it back to Lucien's broom, which is indeed a curious instrument in that very unglorious scene (ouch).
also just wrote a post on Wittgenstein that I highly recommend for anyone thinking about language in Infinite Jest (which presumably everyone is - Detox reminds us to go back to p. 1 to think about the individual "trapped" in language if we haven't been). He makes the crucial distinction between a world "constructed" of language (bad way to think about it) and a world "immersed" in language (good), with a little help from Bob Death's fish joke: "what the fuck is water"?
See
http://infinitedetox.wordpress.com/2009 ... d-writing/ A philosopher myself, I can attest to the slipperiness of that icy world - though a post-Tractatus Wittgenstein might also agree that skating on the ice is not only an absence but also a practical activity, a
use of language that can serve to enhance our grasp of parts of the world, or the intersection of self and world.