Qualified immunity just protects the police, and other government officials personally. If there is grounds for a lawsuit then he could still sue the government that employs the police department.

I think in general, if it is a legit warrant, it is very difficult to win a lawsuit for damage. Though with that video, and how high profile this has been, he might be able to win something. though IANAL, and I'm just going off my gut.

Stealing things out of a person's fridge and eating it is not covered under qualified immunity.