^^^ He prefers it, in fact. Especially from new runners since it makes it easier to set up your runner info.
Truth. Submission by forum PM also lets me add in other SDA admins to help with runners' technical/rules questions without me having to be a middle-man.
If that's true, you may want to alter the 'how to submit a run' page to reflect that, because at least to me it would seem as if e-mail was the preferred contact method from how that page is setup.