All you can do in this scenario, turn it off, back on, and again try the console connection(using straight-thru cable), you should be able to break into the box to load the last saved CONFIG, or just rename the CONFIG.BAK to CONFIG, and reboot the box again.
If that doesn't help, try using the web interface, by connecting the PC to the inside network, and see if u can ping, then try http from there.
If nothing works, it would be better to open up a TAC case to get helped if possible.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
[toc:faq]Introduction:This document describes details on how NAT-T
works.Background:ESP encrypts all critical information, encapsulating
the entire inner TCP/UDP datagram within an ESP header. ESP is an IP
protocol in the same sense that TCP and UDP are I...