Salesforce.com: Trouble deleting record type?

Do you have a hard time deleting/removing the record type assigned to a profile that has no permission on the object?

Well the trick is to build a URL almost exactly to previous profile capable of removing this record type.

Ex.

pattern:
https://.salesforce.com/setup/ui/profilerecordtypeedit.jsp?id=&tid=&pn=&retURL=%2

sample:
https://cs5.salesforce.com/setup/ui/profilerecordtypeedit.jsp?id=00f90000000gnc
M&tid=Opportunity&pn=System+Administrator&retURL=%200f90000000gncM

This solved my problem! Goodluck!