Here's how Decastor is defeated in Diesel City Adventure: The Search for The Cartoon Flamers' instruments.
Decastor: NOW I'LL GET YOU, SPONGERAIDERS!!!!
Spongebob: (panting) No, you won't!
Decastor: You can run, but you can't hide! [cackles]
Littlefoot: GET BACK!!
Decastor: Coming, suckers! [laughs] Look out! Here I come! [laughs] I like my speed! [laughs then growls]
[they all race acroos a small bridge]
Decastor: Pretty fast for your types.
[somwhere else in the city, Thomas and Percy are searching with the Mane 6 for the team]
Twilight: We must find them!
Thomas: Yeah, you heard what Dash-9 said, that diesel's crazy!
1206: Hurry, hurry hurry! Faster, faster!
[they then see the top of 1206 from behind some frieght cars]
1206: Come on! We have to move faster than this!
[then from behind the cars, 1206 and Pablo race out]
[Thomas and Percy race along side the train]
Twilight: What is the meaning of this?!
Pablo: No time to explain, the team's in trouble! They're heading for the curved viaduct!
[we then see the team and Decastor approaching the curved viaduct]
Decastor: Now, you're through!
Spongebob: Head for the bridge!
[as they race into the vidact, Pablo, 1206, Thomas, and Percy are approaching fast.]
1206: Go through the tunnel! We'll cut them off and then reverse back for them!
[Back to the Raiders]
Spongebob: [panting] We're almost out of the city, we just have more bridge to go!
[then the train, 1206, Thomas, and Percy emerge from the tunnel and then reverse onto the viaduct and soon are paraelle with the SpongeRaiders]
Pablo: Get on guys! We're getting out of here!
Spongebob: You heard him! Get on the train!
[They hop on the train and Pablo opesn the regulator to fall power]
Decastor: No! You're not escpaing that easy!
[but the SpongeRaiders train makes it across the bridge just in time]
Twilight: Well done, Pablo! Well done!
[then Decastor aproaches the bad bit of track and then when he hits it, his wheels bump off the track!]
Decastor: Oh, no!
[then he hits a rock and goes flying off the bridge!]
Decastor: FOUL PLAAAAAAAAAAAAAAAAAAAYYYYYYYYY!!!!!!!!!!!! [he then lands into a barge of manure] Uh!
Rainbow: He's sure gonna be a real "stinker" after this!
Decastor: Uh. Uh. (as Biff tannan) MANURE!! I HATE MANURE!!
[then police choppers fly above as the Diesel Squad appear on the viaduct]
Police cheif: Give yourself up! We have you surrounded!]
Decastor: no! Not the face!