The ONLY way that you can remove synced photos from the iPad is to unsync the photos with the iTunes library that you used to sync them to the device in the first place. You cannot delete them any other way, you have to connect to that computer's iTunes library, uncheck the photos in the photos tab and sync to remove them.
There are apps that will let you transfer photos via WiFi.
How to Transfer Photos from an iPad to a Computer
Importing Personal Photos and videos from your iOS device to your computer.
The links below have instructions for deleting photos.
iOS and iPod: Syncing photos using iTunes
iPad Tip: How to Delete Photos from Your iPad in the Photos App
Another Way to Quickly Delete Photos from Your iPad (Mac Only)
How to Delete Photos from iPad
How to: Batch Delete Photos on the iPad
(With iOS 5.1, use 2 fingers)
How to Delete Photos from iCloud’s Photo Stream
Thanks everyone! But how do I get them off the iPad back on to the PC, which since has been repaired and all the photos now on the iPad were wiped off of the PC.
From what I am getting from everyone, it seems if I "unsync" the pics, it will delete them completely. I want to copy them back to my PC, and THEN delete them off the iPad.
Sync Your iOS Device with a New Computer Without Losing Data
Syncing to a "New" Computer or replacing a "crashed" Hard Drive