I am not familiar with your truck, but on most cars I've seen the injectors are controlled directly by the computer. On most cars there are some resistors in line but they would not cause them to be open.
Can you get the truck started after you clear the excess fuel? And does it then run normal?
The injectors are supposed to get a 12V pulse periodically, controlled by the computer. I'd make sure you don't have constant 12V on them while the car is running. I'd imagine the car would flood or not run right, if that was the case..
Have you tried resetting the computer (taking battery off and leaving it off for a bit)? Maybe it 'stepped in the weeds', much like most PCs do from time to time.
Remco