Spiritual mouth to mouth resuscitation
Mouth to mouth resuscitation has figurative connotations, sexual ones. We occasionally laugh about it - "Yes, I would give this chick a mouth to mouth resuscitation if only she fainted" and so on.
What is done to save a person's life might be mistaken by a passing bystander for kissing the person passionately.
The same way, the guru's acts towards a disciple may sometimes seem inappropriate by a "passing bystander" while actually they are intended solely for the spiritual progress of the disciple.
This does not mean defending the gurus that in the name of spirituality exploit their disciples sexually or in any other way. In their case, the medical mouth to mouth indeed became something else, not only in the minds of some of the bystanders but also in their own minds.
Having said that, there is a chance, only a chance, that some of the stories we have heard about terrible deeds of gurus are actually innocent spiritually-motivated acts intended for the higher good of the disciples. It is possible that we judge wrongly some of the cases due to our gallery of connotations and our limited knowledge.