Official Ruling
No, it can't be activated. Until the processing for the 1st activation has resolved, only 1 activation is possible for each immediate-type effect. In your case, until the deletion of the 1st only [Sukamon] A is resolved, only 1 activation is possible for each "when [...] would" effect, therefore the effect that has already activated for [Sukamon] A can't be activated again.
Source: BT11-041 Etemon