[JRutledge]

It can be a challenging play, but I think this is mostly as a result of the offensive player initiating contact. Once you determine that fact, this play is not as hard. Because if the defender was not likely to contact the shooter, then you can really realize how the contact affected the shooter. Walling up has become common as players at the higher levels like college are doing it to not be in the RA. And as a result, players in the high school level are seeing the tactic and trying it in games with no RA (partially because it can make the shot difficult). But if you do not deem OIC, then this is likely a foul on the defender if they bring their arms down. Bottom line, see the entire play.

Peace