Electric Seat Safety

I have a 94 Dodge Grand Caravan with electric seats. The seat is controlled by a toggle switch on the side. While driving, a box slid into the toggle switch. The seat moved forwards and pushed me into the stearing wheel before I stopped it. I now stretch a bungee cord between the front seats to ensure that nothing can slide there again. Has anybody experienced this problem?

David

Yes, now I put boxes BEHIND the seats.