Here are a few questions revolving around the main thought of whether a creature can be teleported into a tanglevine:
1) [strike]Must a tanglevine have a target to entangle when it is cast?[/strike] Target is corporeal creature, so no.
2) Does a tanglevine go away if its original victim gets teleported out?
3) Is it possible for something to be teleported into a tanglevine that does not currently hold a victim? I know that you can teleport something out of it, for example.
4) Would the tanglevine have to be one that you control to teleport something into it, or could you use your opponent's (unoccupied) tanglevine for this (presuming this is legal at all)?
As a side note, I am thinking that this might be an interesting tactic in temporarily incapacitating a flying creature. Thanks!