ya.. just start over kill the plants you have and go new.. it may suck but its for the best.. they will use all their vigor just trying to come back to life that they will have nothing left to create the delicious buds your hoping for.. in my opinion it would be a waste of allot of time and money to grow out a plant the has been "ripped up" just my 2 cents.. it sounds like their soil? if so thats a good start for someone who docent really know what their doing.. did u start from seed or from clone and are u in a MMJ state? answer all those and i can help you a bunch lol