I once road killed a random fire team member during a strike that was AFK.
Not pushed him off a ledge.
Road killed.
I have yet to do that again. Pretty sure it was a glitch.
After I revived him I proceeded to see how far into the strike(Dust Palace) I could take him before he came back.
I would push him along, hop off my sparrow, kill some enemies, hop back on, push him some more and repeat. I got him to the first door where you use your ghost before he D/Cd due to being away. I was deeply saddened by this as I felt I could have gone much further :(