Any water damage to the floor around the toilet?

His renters insurance should cover the damage to his motorcycle cables.

that's a lot of damage, good thing you have insurance.

Noone knows who this person is, if they would steal, damage, etc the property.  2nd, as a listing agent, I try to get potential buyers in there as soon as possible, knowing the next deal could be one mouse -click away from them no longer wanting my property. 

I do have some more time before the next closing date, so I should be able to better determine damages.

There's no reason you can't alter their lease to end sooner; at the very least you can say that you tried but you're legally bound to let the person live there until the lease expires.An offer to help them look for a new place may also go a long way to avoid a cash for keys/insurance claim due to damage scenario.  

Regardless of who's fault the damage is, as @Kevin Harrison said, it's going to be like getting blood from a stone getting them to pay.

A backup as a result of inadequate clogged or damage on their end might be covered by them.

I'm learning about contract assignments but not sure how this can work with the "original parties...remain obligated hereunder" clause.Also, Section 30, on Defaults, states that a defaulting Buyer may be liable for actual damages, and "will immediately pay the costs incurred for the title examination, Appraisal, survey, and the Broker's Fee in full"Arghhhhhh!!!!!

From my personal experience, their quality of customer service is pretty good, and it seems that the company gives their representatives adequate power to go beyond each user's expectations when the opportunity arises, whether that involves providing extra credit to use during cancellations, replacing items that were damaged or taken during a stay, etc.