Martyr's quote fits perfectly with Jesus' spiritual presence, given that the essence of Christ's divinity is encapsulated in His spirit and Word of God. This also eliminates the need for your medieval mental gymnastics. I can (and will) provide you with a quote from the Didache which supports this interpretation, just don't have my reference material with me at the moment... stay tuned, I will reply to you on this same thread.

Just curious, as an "armchair canon lawyer" do you avail yourself to current, well-sourced scholarship for your church history, or do you rely solely on materials sanctioned by Rome?  (Hint: it's no longer considered a sin to read/study sources "outside" of Rome's purview.)