The big rad 40" travel dudes included Martin Ogden (Oggy) a Pro 4X rider sponsored by Hope. Although, if asked, he'd have likely happily given advice and help rather than take the Pish. But, not (potentially) making a fool of yourself infront of a group like that is understandable.
The big boulder drop is easily rolled off (which is what most people do), the parallel red 'chiken run' is more difficult IMO than just rolling off the boulder.
Like people above say, keep coming back and your slow speed skills and bike control will improve.
The original theory behind Stainburn was that it is such a small area that there was no point in building fast flowing trails as it would all be over in minutes. So it's a sort of skills park (with bits of excitment in between) for sessioning and improving bike handling etc etc blah blah and there happened to be lots of rocks for the original builders to play with, which helps!. I've always found that a positive approach, punching the bike over stuff, helps big time.
And if ever you fall off your bike infront of a bunch of trail builders (like some unfortunate sod did on Sunday), remember, they are probably just very 'ordinary' MTBers like me!