I should look around before I ask stupid questions...Found the WAAuthNet_postedValues session var. See output below:
1::1::1::(TESTMODE) This transaction has been approved.::000000::P::0::100020::3-Month Pass<|>99.5<|>3-Month Pass<|>1<|>1::99.50::CC::auth_capture::mlast@email.com::Michael::Last::::123 Main Street::Austin::DE::55555::US::512-555-1212::::mlast@email.com::::::::::::::::::0.0000::::::FALSE::::REMOVED::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::Michael Last::123 Main Street::Austin::DE::55555::US::*::05/2014::::Visa,Mastercard,Discover,Amex,Diners::::mlast@email.com::0::Discounts::0::1::REMOVED::Order Confirmation::Order Details::no::0::::table
x_login=REMOVED&x_tran_key=REMOVED&x_version=3.1&x_invoice_num=100020&x_test_request=TRUE&x_method=CC&x_type=AUTH_CAPTURE&x_relay_response=FALSE&x_delim_data=TRUE&x_delim_char=::&x_customer_ip=127.0.0.1&x_amount=99.50&x_description=3-Month Pass<|>99.5<|>3-Month Pass<|>1<|>1&card_name=Michael Last&card_address1=123 Main Street&card_city=Austin&card_state=DE&card_zip=55555&card_country=US&card_number=REMOVED&card_exp=05/2014&card_cvv=&card_allowed=Visa,Mastercard,Discover,Amex,Diners&card_address2=&email=mlast@email.com&cost3=0&description3=Discounts&item3=0&quantity3=1&from_email=ytsupport@sylvanmathprep.com&subject_email=Order Confirmation&subject=Order Details&dontsndmail=no&shipinfo=0&shipping=&x_tax=0.00&image_placement=table&x_card_num=REMOVED&x_exp_date=05/2014&x_email_customer=FALSE&x_merchant_email=REMOVED&x_tax_exempt=FALSE&x_first_name=Michael&x_last_name=Last&x_address=123 Main Street&x_city=Austin&x_state=DE&x_zip=55555&x_email=mlast@email.com&x_country=US&x_phone=512-555-1212&x_recurring_billing=NO&x_cust_id=mlast@email.com&x_cardholder_authentication_value=