firewns wrote: “I guess this is the bodily part of what is meant by giving up attachment to the Buddhadhamma in order to attain Nibbana.”
That is right.
“Attachment to Buddha Dhamma” is not a craving. It is “chanda”, one of the four iddhipada: chanda, citta, viriya, vimansa.
That “chanda”, comes from understanding of the unfruitfulness (and dangers) in attachment to worldly things (thus extending the rebirth process, where most births are in the apayas).
Now, some people confuse “chanda” with “kamaccandha”. The latter is one of the five hindrances (panca nivarana) that “cover the mind”.
Kamaccandha is “kama” + icca + andha, or “blinded by attachment to sense pleasures”.
Therefore, when one understands the key concepts of Buddha Dhamma, one’s mind will give up kamaccandha AND cultivate chanda (the desire to attain Nibbana and stop future suffering from arising).