SQLTE table is corrupt - had typo in migration file

I generated a bad migration and the file looked like this

class AddActivexToMat < ActiveRecord::Migration
  def change
    add_column :mats, :is_active, :boolean
    add_column :mats, :default, :true
 end

end

Without checking the migration file, I ran rake db:migrate and now my schema reads

# Could not dump table "mats" because of following NoMethodError
#undefined method `[]' for nil:NilClass

I tried to remove columns but getting the following errors

StandardError: An error has occurred, this and all later migrations canceled:

undefined method to_sym' for nil:NilClass/Users/jhorsch/.rvm/gems/ruby-2.0.0-p247@global/gems/activerecord-4.0.2/lib/active_record/connection_adapters/abstract/schema_definitions.rb:215:incolumn'

I don't think changing the columns will work either and I am afraid to drop the table. I don't think I can just drop a table and add a new one with the same table name. In this case the table name was 'Mats'

Luckily this table only had one previous column 'name'

Any ideas how to fix this?