Is There A Way To Restart A Quest?

I was doing the quest "Fate of the Fallen" and I lagged after Theorik told me to defend the portal, so when I was able to the move the bridge collapsed and I couldn't get back up. Is there a way to either restart the quest or get back to the temple of time? /fixquest isn't going to help here but I have another Theorik's Staff cause it respawns in the Nessak Bank, if I could get back to the Nessak of the past wuld Theorik still be at the portal and would I be able to run to the roots of corruption in the past to complete the quest or am i never ging to be able to complete the quest and unlock the ice barrows dungeon

 

You can make it back to Past Nesaak. Just walk to the Temple of Time, throw the staff in the hopper, go to the house where you get conscripted, and then you should be good to go.

 

FYI: The one time it is important to follow what the NPC is saying:

• Telvu: Aha, quick job. I see you've the wand. Must've needed a sharp tongue to get the bankers to give it up.
• Telvu: Now, it is a long walk to Time Valley. Needn't take that walk, though, as I can teleport you there. Hopefully.
• Telvu: Doing so is exhausting. I'll only be able to do so once, so if something goes wrong, you'll have to walk back yourself.
• Telvu: Once you're there, enter the Temple of Time. You should know what to do once you are there. Careful dealing with time travel, friend... No idea what you might find.