Second, not sure what 他干了一些事让you很不舒服.If it is not related to professional, it is just that you don't like him.
Third,you said现在单位还真的很需要我,我觉得对不住似的。第二,我一走,好似向他摇了白旗,落荒而逃,心也不甘。Hahha...really don't need to second guess what others think. Leave it or stay, your choice.