>Try to force the trident back to the mark we were aiming for, shifting ourself and our grip on the trident forward in the process for better leverage, but be wary of stepping into easy shield bash range
>However, be ready for him to release his grip on the weapon and go for his sword
>If he does this while his arm is in a position where we cannot readily follow up simply by stabbing him in the joint once he releases and we're close enough to have a chance of this working (and without the shield being too much in the way, although it's already if we can't SEE what we're reaching for), quickly release one of your own hands off the trident and lunge it towards his hand. Ideally, try to get our hand on the hilt before he can, but otherwise simply grasp our hand on his and prevent him from drawing it free.