Chad,
Is iOS at 10.3.2? I believe that is the latest version of iOS that just came out either yesterday or Tuesday. Does this crashing happen on all iOS devices?
When does it crash? Just when you open the map or when you start to zoom in? If you make a new web map with the same data, does it still crash?
Are you using services from ArcGIS Server or are these services published directly to ArcGIS Online? If ArcGIS Server, which version?