You need a citation of a FAQ or something similar. The core rule is that you cannot attempt to cast the same spell more than once in the same turn (even with a different wizard). To bypass this rule with endless spells, you need a rule that specifies that endless spell don't fall under that limitation, otherwise you cannot.
i think he means the turn after you cast it. so you would cast it and then the next turn dispell and then cast it again
Well, in that case yes. You can dispel a ES and cast immediately the same spell. You just cannot cast it twice in the same turn.
Yeah this is a case where an endless spell has been casted in a previous turn. When it is your hero phase, you start by dispelling and then recast it. There is nowhere it says dispelling = casting, so you can totally remove an endless spell and cast it in a better location in the same turn.
Yes, that's what I mean. I remembered, for some reason, that you cannot dispel and then cast a spell either. That's wrong, fortunately.