Bull's Charge

i find Skintekaru Manshredder in Perdition Rock, but all skills he used are distracting blow and wild blow. I tried spamming SOC but it didn't seem to use the stance. Can anyone who captured the skill help?

To capture this skill, you need a certain amount of luck. When I captured the skill, I had my boyfriend run away while Manshredder chased him, and I spammed SOC. Reason being, the point of Bull's Charge is to knock down a fleeing foe. Now, I didn't see him use it, but I managed to capture Bull's Charge after a few thousand clicks.
Hope this helps.