Shalom!
On page 98 of the Book of Thoth, Crowley says the Hanged Man is in a ritual posture from the practice called "The Sleep of Shiloam". This is meant to symbolize a return to the Eternal Silence that is attributed to the letter Mem and the element of Water and is most commonly encountered in the sacred word AUM. The final "M" being the return to silence.
Shiloam (or Siloam) is the name of a pool in the city of Jerusalem. It features in the biblical story of the man born blind in
John 9, where Jesus
spits on the ground and makes mud. He smears the mud on the blind man's eyes and tells him to go and bathe in the pool of Shiloam. After doing as instructed the man received his sight.
An important qabalistic clue here is that Siloam in Greek, Σιλωάμ, enumerates to 1081. This is the same numerical value as the Hebrew word, ThPhARTh, Tiphareth. This is the mystical pool that the Adept 5=6 sumberges him/herself in the Sleep of Shiloam.
LIBER LXV 4:9 said:
In the garden of immortal kisses, O thou brilliant One, shine forth! Make Thy mouth an opium-poppy, that one kiss is the key to the infinite sleep and lucid, the sleep of Shi-loh-am.
In his commentary on this verse Crowley says the the 'kiss' symbolises the surrender of the Adept to the Angel. This isn't surrender in the sense of a fugitive giving themselves up. It is the surrender of ones self to a lover - the HGA.
Crowley then goes on to interpret Shiloam as the Hebrew letters Shin, Lamed, Mem. This of course spells the Hebrew word, ShLM(shalom), which means peace.
Symboilically it is Shin(Fire), equilibrated and balanced by Lamed(Libra), with Mem(Water). This is just another way of depicting the hexagram.
In the context of the path of Mem and the Hanged Man card it symbolises the Fire of Volition in Gebruah being
married to the Water of the Mind in Hod. The Cup of intellect surrenders and conforms itself to the
penetration of the Inner Light.
Of course if our minds are resistant or restricted then it's a case of 'grab your ankles and smile through the pain' while the Angel tries to
loosen us up through the lessons of life.