3 Part Technique - Rather than asking your opponent to switch his stance for you, learn how to handle whatever he throws at you, regardless of the side. All facetiousness aside, it is important to have an answer ready for your 'bad side', especially when pushed back from Butterfly into an Open Guard. Marcelo answers with the Deep Half Guard; first break your opponent's grip before pummeling underneath, and then finish with the Shin-In Sweep or transition to the X-Guard for the Unbalance Sweep. If he prevents you from entering deep with his other hand, break that grip too and seize control over his wrist and elbow for the 2on1 Sweep from Half Guard.