What were you trying to do, or what Cydia tweaks were you installing before your iPad got stuck in Safe Mode? Did you try to go back to Cydia and remove the latest tweak(s) you had installed to see if that helped?
What are the tweaks you have installed on your iPad right now? Maybe we can look at the list and fell you which one(s) might be giving you trouble.
Oh, before I forget, what version of iPad do you have and what iOS are you running?
Marilyn