Now the only part that's wrong with that is that Wraith probably knows if the mine explodes on you even if it's your teams's mine or not.
Nope, no details as of yet. Not even from the clown man that everyone seems to be incredibly fascinated with recently. It's weird. The joke has turned into forum lore where Wraith is some kind of enigmatic, omnipresent being from beyond the internet.
ANYWAY, I reckon they won't kill you. I know that turrets won't shoot at you, so I think mines will work the same.