801.01a suggests you use an extension of the closet applicable rule to resolve this. So which is the closest, 803.01b (casual obstacles), or 804.03d (interference by moving the disc)? The doesn't seem to be consensus.
I'd say wait, it honestly can't take that long for the player to get to you. The 30 seconds definitely wouldn't start until the tee is clear. If you wait around a good while and he doesn't show up, I don't think it would be reasonable to expect you to wait around forever, and forcing someone to take relief behind the teepad seems completely absurd. If there's no sign that he's coming after ample time is given, then I think an argument could be made to move the disc while everyone tees.
But really, I just can't see it taking that long for someone to show up.
Also, if I came up to a tee pad and there was a disc on it, I'd think it more likely it fell out of someone's bag than it being thrown there, and it could be argued there that it was unintentional by virtue of not realizing it was a "live" disc.
I'd say wait, it honestly can't take that long for the player to get to you. The 30 seconds definitely wouldn't start until the tee is clear. If you wait around a good while and he doesn't show up, I don't think it would be reasonable to expect you to wait around forever, and forcing someone to take relief behind the teepad seems completely absurd. If there's no sign that he's coming after ample time is given, then I think an argument could be made to move the disc while everyone tees.
But really, I just can't see it taking that long for someone to show up.
Also, if I came up to a tee pad and there was a disc on it, I'd think it more likely it fell out of someone's bag than it being thrown there, and it could be argued there that it was unintentional by virtue of not realizing it was a "live" disc.