sassafrassquatch:
I believe we did add some decoupling to the power supply but that did not solve the issue, I will retest once the thing is up and running again. I figured in the worst case, I could reset the lcds after each run(but I cant imagine we didn't think of that initially)
If there was an initial attempt at decoupling, and it was done correctly, you could also try putting the the motors in a Faraday cage (with ports for the wires and hoses) and this will eleminate the possibility of induced EMI. Any grounded fine metal mesh should work, so if you have a hardware store that sells screen window/door material that will do.
Also by reset, you just mean sending commands to clear the LCDs right? If so, that would probably be the quickest solution. Although IMHO, if the motors are emitting that much EMI it's better to cage them and prevent possible interference issues with other nearby electronics.