Lin545: Look, I found no posts stating that "trading steam account" is prohibited here and I am doing it only because I leave steam, so I am not into "trading accounts" either. If blues ask me to do it, I will remove the post - its just exactly that I expect people here to be much more trustable trade partners, than a random buyer on some 3rd party site that does this daily, so better suited for this one-time migration.
The only legal recourse that I know of despite not being a lawyer myself would be to ask Steam to terminate your account.