Help - constant Samsung Logo on boot

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http://forum.xda-developers.com – HELP!, I have been very lucky in the past and have had very few issues rooting and applying different themes, kernels etc. but the fact is I have little idea of what I am doing. For some reason I can't explain I tried to load the ninja rom to get FP5, ( and I did not back up before I tried to install it. because I am that stupid). Not sure what happened but I got stuck in a Samsung logo boot loop. I read where someone else had similar issues and got going again by putting Tweaked 2.2 over top after a clearing data etc so I tried that. Now when I boot I get the Samsung logo and it just sits the (HowTos)