I'm not too familiar with the area but this isn't my first work trip there (headquarters is located there so I've been a few times) and I've had the pleasure of driving from there to San Diego at like 4-5pm, so I know it can be pretty lame traffic wise. I am more than willing to make the drive, traffic and all, if you're interested. It's likely I can even get off work earlier that day too so that I could possibly leave by like 2:30pm and avoid most of it, my work is pretty flexible.
If you do want to try to meet up that one day that week then let me know and I can PM you a contact number and I'll also reach out again to you on that Monday.