Yeah, you can get it back to stock.
I actually did all of this from my phone and going by memory for my HTC lmao - and I've never taken a phone back to stock personally, and I don't own this model - so I don't know how to fully advise on that. I know the general idea because I read about it once.
You can check around this forum, I have to believe that others have done it already.
But first, a commercial - why?
With Viper you can get just a bit more performance than stock, you can use things like MyBackup Root and nandroid backups and never be screwed up like you can with stock.
One thing to note, you never want to take a carrier or HTC update directly when rooted.
Anyway, it's your choice and as I mentioned, I'm sure someone has instructions, and links to the pieces you'll need, for it here somewhere.
Thanks for the compliment, glad you got it sorted.
Check your inbox, I'm actually a Nigerian princess and I just need your deposit slip to make us both rich. Rotflmao