Ezra didn't take the water. He knew it was a precious commodity and he wasn't going to waste it on cleaning himself up. He'd figure something out, but he wasn't going to deprive Mort of something like that. He did what he could, though, trying to get himself as clean as possible sans water.
He was going to need new clothes, that much was for sure, but he could look later. He'd have to find a shelter for the night anyways, maybe there would be something he could wear when he found someplace suitable.
Then he looked at the crowbar, and wiped it down with his ruined shirt, setting it aside as he got to his feet. He looked at the shelves, then started to take things down from the higher ones, so that Mort could look at those items too.