Was my inability to WILD because of the way i awoke?
Well depending on how shocking your dream was, you might have been to stressed and uncomfortable, and i think you were when you need to take a little walk in your room after it
But nevertheless i think it doesnt matter what way you wake up what brings me to my answer to the second question:
How to keep concentration more?
Forget everything that makes you feel uncomfortable, be relaxed, do progressive muscle relaxation, lie on your back, keep your head as low as possible so you face the ceiling, then get reeeeeaaaaalllyyyyy relaxed.
Imagine the dream scape you want to get into, and then wait.
Pay no attention to your real body at all.
why that?
because when you do, you will probably still go into sleep paralysis, but it wont kick in like a bomb so that youre completely paralysed, for example if you concentrate on your right arm it will suddenly start happening on your right arm, and it will probably scare the fuck out of you like someone rubbing your arm lol. I dont know about you but thats for me.

after entering sleep paralysis concentrate on the dream you want to have or maybe the dream scape you want to get, and think of nothing else, dont get creeped out by the sensation,
just be like you dont care about anything else than succeeding in WILDing,
and DONT force yourself awake.
btw I wouldnt recommend binaural beats as they have a mental effect on me like coffee has.
is it possible to completely forget a WILD as if it were a normal dream?
Not as if it was a normal dream, but you can actually forget a lucid dream completely.
Happened to me this morning.

Write dream journals http://www.dreamviews.com/blog_post.php?do=newblog
that will help you remember your stuff and pay more attention to what is real and what is not, which in the end is what gets you lucid.


Best wishes for you, good luck and dream on


garf