While swinging, he swung into glass of a building and, without his experience, crashed through it and oofed on the floor. Sandman followed. There was conveniently a water bucket in the corner so he webbed it to himself and poured it on Sandman.
It didn't work.
Sandman made himself rise over Spidey, then dived at him and beat him to death. This was the first instance of Spidey's suit getting ripped, yet it got ripped a lot.
He was thrown at the wall, where he tried to cling onto a door, but Sandwich just threw him back out the window with a door hugging him. Spidey broke up with the door, stuck his feet to it like a surfboard or whatever and started swinging. Sandmanny, knowing that his plan to murder him had failed, started following him again. This led the two to a construction site. Since SandPloopy didn't have Spider Sense (Or, uh, Sand Sense?), he didn't realise that he had fallen right for Spidey's trap. What was the trap? You may ask. Well, that will be explained in the next paragraph.
Spidey turned on a machine which SandPloopy was standing under, which flowed out wet concrete. But this concrete was quick-dry, meaning that SandPloopy didn't have a lot of time to escape the, um, grey mess. Which was correct. The concrete dried up before he could escape. Just for extra measure, he webbed the statue up and left it for the police.
Next time, you will find out his method for getting in the yearbook. But for now…
...The End