Actually, when we interpret the law, one of the things that must be borne in mind is that any canon which grants a favor is to be interpreted broadly, and any canon which punishes is to be interpreted strictly. So a canon which grants the faithful the ability to access the sacraments in cases where they are unable to approach a Catholic minister for them is one which bestows a favor and should be interpreted as broadly as possible. The canon simply does not say that the person must be in danger of death, only that they are physically or morally impeded from approaching a Catholic priest. If you are in Greece, and in a remote area, and unable to get to a Catholic priest, the law allows you to receive the sacraments from an Orthodox priest. There isn’t any need for discussion of supplied jurisdiction, since the law does not actually bind Orthodox priests, but only Catholics, and so the law cannot supply jurisdiction to an Orthodox priest.
In short, this is a canon where as much leeway as possible is granted. If it doesn’t say danger of death, it doesn’t mean danger of death.
-Fr ACEGC