Some person offered `Umrah during the Sacred Months for Hajj, traveled to his family, and then came back to perform Hajj, is he to be a Mutamatti`?

Q: There is a person who performed 'Umrah (lesser pilgrimage) in the month of Dhul-Qa'dah during this year 1416 A.H., and then he and his family returned to their home in Al-Madinah Al-Munawwarah after completing their 'Umrah. On 7/12/1416 A.H. he went to the Miqat (site for entering the ritual state for Hajj or 'Umrah) and performed Ihram (ritual state for Hajj or 'Umrah) from the Miqat of the people of Madinah intending to perform Hajj only. Upon his arrival to Makkah, one of his companions said to him: You are still Mutamatti' (pilgrim performing 'Umrah during the months of Hajj followed by Hajj in the same year with a break in between) by your previous 'Umrah and you need to take the Ihram (clothing worn during the ritual state for Hajj and 'Umrah) off and then wear it on the Day of Tarwiyah (8th of Dhul-Hijjah) as a Mutamatti'. He removed his Ihram, cut his nails and did not make Tawaf (circumambulation of the Ka'bah) and Sa'y (going in between Safa and Marwa during Hajj and 'Umrah) relying on the Fatwa given to him by that person that he was still Mutamatti'. On the Day of Tarwiyah he put on the Ihram, made Talbiyah (devotional expressions chanted at certain times during Hajj and `Umrah) for Hajj, got the Hady (sacrificial animal offered by pilgrims), performed the Tawaf and Sa'y on the day of 'Eid-ul-Adha (the Festival of the Sacrifice) for Hajj and then completed the rest of the rituals.The question is: Is the Fatwa given to the mentioned above person correct? If it is not, then what should this pilgrim and the one who gave him the Fatwa do in this situation, keeping in mind that the 'Umrah performed by the mentioned above person was performed during the months of Hajj and he did not make the intention to make Tamattu' by this 'Umrah until Hajj, but he made the intention for 'Umrah (Part No. 10; Page No. 135