Sticky Throttle @ 70k miles Options

[SteveHall]

I've had this intermittent fault with my throttle. Occasionally when I start up the engine it get going and stalls fairly quickly. If it then try to depress the throttle pedal (gas) it's stuck. If it give it a kick or press hard it suddenly frees itself like it was stuck / jammed on something. After this the car will start, idle and drive fine with normal throttle responce and no further sticking. This doesn't seem to be just a cold weather thing and seems to happen about once a month completely at random, even if I'd driven and parked up the car 4 hours ago.

Anyone else had this problem? I'm thinking replace cable and strip down the throttle to see if there's anything obviously wrong with it + lube / grease / clean anything that needs it. Any thoughts / ideas?