Yes load one of those incremental saves you did (you do have the incremental save option on dont you? If not turn it on NOW).
Its better to use maya ascii format as long as you edit things for many reasons such as this.
Also maya might have tried to do a crash recovery file in yourtemp directory.
Unless you just happened to save whan it crashed then i suggest you do a disk chek too.. as your disk might have a problem of sme sorts.
Again a good reason to have a redundant disk system.