TJ is unsafe, and becoming moreso with the growing economic "issues."
People not spending in the U.S.+ San Diegan's afraid to go to TJ+ Sore thumb stickout tourist biker+ Already very poor TJ= Tempting Fate
I know of many, many surfers and spearfishers who have been going to Baja for 30+ years without problems, that speak Spanish fluently, and even they feel unsafe about going down there anymore.
Seriously, if you want to go to Mexico, don't go through TJ.