Shorting the speaker wires

I just tripped on the right channel speaker wire which pulled the terminators out of the speaker. Sparks flew and my heart dropped. Bought the ARC 150.2 just 2 weeks ago here on Audiogon.

Live in Fresno so no dealer. Took it to a local electronics store who said no problem we will fix it.

The store was an utter mess.

Speakers are Linn .

The cables are ARC Litz and have lugs terminating on Monster X-terminators.

Suggestions for new termination?

Thanks