I have been wondering about this question for some time, and recently some other people were asking about it as well so I want to get some help...
Actually it's a few situations, involving the pull, which is one area I don't know alot about. If the pull is sailing toward the sideline and the player is going to catch it, doesn't realize they are so close to the sideline and they catch the pull with one foot on the sideline (I saw a few this wknd where people caught the pull literally inches from the sideline, so it is actually feasible) so is the result a turnover, or is it their disc at the brick mark as if it landed OB? I think that it would be a brick but I am not sure?
If it is a turnover that is simple enough, but if it isn't a turnover that in turn begs another question, if the receiver thinks they are in bounds but they are actually out, and they drop the disc, then it would still be theirs at the brick? WHICH MEANS - you could potentially just run out of bounds and smack a disc down to gain a brick on a disc that was going to come back in play at a very difficult position....



Out of Bounds
In my knowlege of the game, if a player catches it on the line, it is in fact a turnover no matter the pull or any other part of the game. It was their choice to play the disc, and they could've let it stay out and taken it at the Brick or risk it coming back in deep in their zone.
IX. Out-of-Bounds
Any area not on the playing field is out-of-bounds. The perimeter lines themselves are out-of-bounds
As for the playing it out of bounds, it is sort of tricky. This rule seems to be pretty clear though.
If a pass does not come in bounds the opposing team gains possession of the disc where it left the field of play only if the defense did not contact the disc. If the defense contacted the disc, the disc must be put into play at the point on the playing field proper closest to where the contact occurred.
So it appears that if the team recieving were to contact the disc out of bounds they would retain possession, but at the point where they downed the disc, not at the brick.
Hope this answers your question!
Follow up
Somthing I forgot to add, if the player who downs the disc has any body part contacting the field in bounds, it is a turnover because they still played in while in bounds, so if you'd like to try this play, make sure you're actually out of bounds before you D the disc!
My interpretation is slightly different
The pull is treated differently than other game situations, as per VIII.B.7.: If the pull is caught, the disc is put into play at the spot on the playing field nearest to where it was caught.
The player catching the pull retains possession regardless of whether they're inbounds, or not. By playing at the spot nearest where it was caught, though, I would think that possession is gained on the sideline, rather than at the brick/middle.
As for Alex's second question, from VIII.B.8: If a player on the receiving team touches the pull before it hits the ground and the disc then hits the ground, it is considered a dropped disc and results in a turnover.
Again, this is regardless of whether they are inbounds or not.
My two cents.
I agree that when a pull
I agree that when a pull is caught out of bounds, the player retains possession and must put the disc into play at the spot on the playing field nearest to where it was caught. Failure to bring the disc into play by setting a legal pivot (ie. they think they are in bounds when they are actually out of bounds) would result in a travel.
With respect to dropping the disc after catching it out of bounds, the disc is 'live' so a turnover ensues (point 2 below). The disc can have 3 states according to the 11th Edition:
II R: State of the disc: The nature of play at a particular moment during the game. There are three states of the disc: