Amen ironhorse - you said it best. Get the game over with as quickly as possible. I say go for 12 runs so you can have a couple to play with. 9 - 1 is not a bad score and is not impossible to come back on.
Look your upset and ticked off and it's understandable but you cannot control what the other team does. Control what you can control. Make your team better.
Each time you say that the other team is bush league to your players you send the wrong message. They are now given an excuse for why they got beat - the other team is jerks.
Put the responsibility back on your kids. They messed up so they have to get better.
You want to let up after 8 run lead then that is your choice but who's fault is it if the other team comes back on you? Either way - up or down - your team allowed the other team to score 8 runs on you.