LOL! This is a scare tactic... and it's working.
I would not worry about the SCAB mechanics. The FAA oversees this and as my Grandfather who worked in airlines for years always pointed out at any time of trouble like this they REALLY keep an eye on things. Plus most of these so called "scabs" may in fact be contract mechanincs. There are legal certifications etc... It's not like Bubba from the car shop can just show up and be an airplane mechanic.
For example, NW does not have mechanics at all airports. What happens is the mechanics are a contract service at smaller airports who service all airlines. They may or may not be union, but don't have near the pay etc. that the NWA guys do... However, they work on your plane all the time and you keep flying safely.
Flyertalk.com had a link to a Minn. newspaper article indicating everyone was going back to the table later this week. Maybe we will know more then.