I have asked the people above me for clarification on that

(but I'll have to wait until after the maintenance for an answer it seams)
To me if it results in people getting
stuck in ditches then it should be an unintended side effect. (or have I misunderstood the above posts?)
getting ported to another mob would be bad luck though, and part of the risk in using it.
Edit:
the people I have contact with are not that familiar with the Psionists class, they'll talk to the designers on Monday (its a bank holiday there this Friday) about it, and find out whether it is intended to be like that, or if it is indeed a bug.