Here's a VERY simplistic scenario that will work today only using the $10 off $50 coupon. Your totals will obviously be different depending on what products you buy, coupons you use, etc., but you get the idea. Basically you are combining all three to get $50 worth of items for $20.
1 24 ct. Charmin TP (P&G)
1 12 ct. Bounty paper towels (P&G)
$25 worth of items from the Freezer of Savings promo (I would buy the ones you want that don't have coupons to go with them)
$13 worth of other stuff - super coupon items from Sunday insert, produce or things you need anyway
Use $10/$50 coupon
Pay ~$40 and get back 2 $10 catalinas - one for P&G and one for Freezer Savings promo