I deleted the podcast from my phone and plugged it into iTunes but it is still showing on there and just wont let me play it. So frigging stupid that it wouldn't let me delete it myself... Frigging wont let me manually manage my music on iTunes unless I sync it to this PC cause I sis a reformat of windows. Like seriously I have to wipe all the music on my iPhone? Wtf? Apple make real shitty software, iTunes is by far the worst thing about the iPhone 4. It also doesn't help that iTunes is slow as **** like their shitty quick time player.
The solution is to Edit > Delete (or Swipe-delete) them from the iPhone and then at next sync. The podcasts will be deleted from iTunes. Want to delete it more convenient? FonePaw iOS Transfer is the software solution to delete PodCasts of iPhone.