Most likely not. Usually all USB ports go through the same IO hub. You could try a PCI USB card if you have one handy, that would work around having a dead USB hub and bad PS2's on the motherboard. If the keyboard was plugged in at the time of the accident, you might try a different keyboard, since sometimes USB devices can be damaged when things like that happen. Try a different keyboard, and unplug all other USB devices.
Don't have a PCI usb card around
I tried a 3rd keyboard. My ps2 keyboard does nothing. My plain ol' usb microsoft keyboard gets one light on it. My saitek cyborg fully lights up. All of these still produce a "keyboard/interface error" and "usb device over current status" message in the bios.