First off, it's interesting that it's not a "hef", an American Wheat or a Wit, but you call it that.
From the list of ingredients it's definitely an orange and coriander-flavored American Wheat.
I wouldn't recommend tossing it though.
If it tastes too yeasty I would say you kegged it too soon and you racked too much yeast into the keg.
For this reason alone I do a secondary for every batch including Hefe Weizens.
If the beer gets too clear just suck up some of the yeast during racking to get it back into suspension.
Personally, I think it needs to age for a few more weeks while more of the yeast to drop out of suspension.
