I also agree with Stabbey's suggestion, it should be a talent, points refunded and weapon skill teneb removed. Crafting should always take into account the *actual* crafting skill.
Back in Alpha we brought this issue up and Teneb was removed silently, only to come back flashing in release (for no good nor proper reason!). This is one of these tiny things where your Alpha testers were right from the get go. Teneb should not be a weapon skill, which means it shouldn't be a skill at all, but a talent.
If you want to be fancy Teneb Handling and Teneb Crafting could be 2 talents, but then teneb crafting would have to add at least 100 to 150 dmg so that a 50% boost or something from handling talent would make it worth to even pick... considering the point where you get them (last 25% of the game) there is even an argument to make to make the book and quest add (both?) these talents to 1 char.
Either way, very odd change this patch brought.