These are a lot of threads in a 20 minute period!
Ill check on the extra delimiter within the file, this is the first report that we have of this. This would happen if there were empty values for fields that were exported. If the field 'phone' was blank it would simply report it as ## instead of #555.1234# etc... Not sure if this is whats happening or not.
Within the module menu you can go in and delete import definitions etc... You should also be able to delete pending scheduled imports there. Have you already reviewed this section?
-Chad