I would agree with Tom if we are speaking of your normal, run of the mill tar snakes - that experienced riders just ride through. But the combination of long parallel wet snakes with a 12 - 18 inch strip of regular pavement between them can set up a slide, grab, slide motion when crossing. When the front and rear wheels are going thru this at different times when changing lanes, the bike can go into a severe wobble.
My 2002 ST1100 has Traction Control and ABS. If the wheels are spinning at different speeds, the system will do its magic. After 160K, I've seen it in action a couple of times. IMHO, TCS would have helped you in that situation.