To absolve oneself of something is to rid of obligation. Absolving oneself from the Eucharist, communion of the Body, is absolving oneself from the Church.
The ritual of Eucharist is nothing to be feared. It can't be, for it is only a means. It is the heart that must be feared for it is the object which corrupts and abuses the means. Fear of Eucharist is not then fear of ritual, but rather fear of communing with the Body-communing with Christ. It is fearing the loss of individuality-our distinction. In fact it is fear of losing ourselves into each other, a physical perichoresis. It is a fear of actually mimicking the Trinity and such a fear disintegrates the Body and leaves one absolved from it.
If Jesus feared his blood and body-if he clamored to save it rather than relinquish it, we would have no Trinity, we would have no Church. Thankfully he did not, and we have both. Jesus, institutor of the Church resolved himself to be a member of the Trinity and instructs his Body to do likewise.
Jesus calls us to not fear the blood and body, but to remember, frequently, the reconciliation of the world. Absolving from the Eucharist is indeed absolving from the cross, and absolving from the cross is indeed absolving in the joining of the resurrection and the reconciled eschaton.