Since you have a new filter then I wouldnt blame the filter being clogged, that was meant for cars that havent been serviced recently or at all. You could have just had a intermittent hiccup and it may be nothing. It could have been a sticky valve in the valve body, its hard to say. Was this the only time it did this or has it done this before? The problem on my website is more directed for cars coming to a stop and wont take off or when you start the car up and move the shifter out of park and the car wont move, not so much when the car is going down the road when it happens. If it has never done it before and hasnt done it again I wouldnt worry about it too much until it keeps acting up.
