^Hate it when that happens. Do this:
setstage <quest ID> <stage #>
Here's a list of the quest stages for that one: http://www.uesp.net/wiki/Skyrim:The_Way_of_the_Voice
setstage MQ105 100 will probably do the trick. If not, setstage MQ105 160 should finish the quest entirely. Was that what you had tried?