Looking at the episode listings and Tobias is only in 2 of the 7 produced. FWIW.
Well that makes sense. He saw how Mom of team libtard acted towards a zombie and almost got herself killed and nearly got him killed as well. He figures his chances are way better without them. Look at all his choices. He started carrying a weapon immediately when he figured out what was happening. Then when he lost the weapon he continually worked on getting it back AND he worked to secure himself a food supply. When he realized the Principal had turned into a Walker he immediately looked for a way out and only engaged the Zombie after Momtard wouldn't listen and got herself attacked by it.
Finally Momtard offered him "safe" haven at her house and he cut his loses and turned her down flat. The only reason he ever got in danger is because Momtard would not listen.
But we've already seen these two episodes and he's not dead. They can bring him back anytime next season. Look how long Morgan disappeared, and Merle, for that matter.