Marcus felt the Zudah's arm collapse, his last melee option gone and the Zudah was sounding like it wouldnt take much more abuse. While he could use the Shark Shield he'd actually gotten very attached to the Shark. That left him with one option.

The Zudah dropped to one Knee as a sign of surrender.

"Well feddie pilot, it looks like you and I are evenly matched. Since I'm sure the Titans think I'm dead I won't be getting paid. I concede to you, and would ask to accompany you." 

[i]'This is a long shot but I don't have many options.'[/i]