I visited a church of "Saint George and Saint Expeditus" in Sao Paulo,Brazil,this church it seems like a pentecostal church,not orthodox.
This church celebrate liturgy facing the people,and use guitar,pentecostal prayers...
The "priest" of this church tells me that they are under the bishop Titus of "Syriac Orthodox Missionary Church in Brazil within Syriac Orthodox Patriarchate of Antioch".
From what I know,not exist syriac rite facing to people.
You are right the Syriac Orthodox Divine Liturgy (Holy Qurbana) is always facing east and is not facing the people like the western (roman) rite.
I know that in November 2011, around 100,000 Catholics and Anglicans were welcomed into the Syriac Orthodox Church in Brazil. His Holiness the Patriarch approved and blessed 2 bishops from this group. At this occasion 80 priests and more than 100,000 believers joined the Syriac Orthodox Church in Brazil. The two Brazilian bishops who were accepted are Jolino Gomes Neto (Archbishop) and Jose Faustino Filho. From what I heard back in November, most of those who joined the Syriac Orthodox Church were charismatic catholics.
I am not sure if these Catholic and Anglican converts were allowed to use a western rite liturgy.
Use of Western Rite Liturgy has some history in the Syriac Orthodox Church. In 1889 a group of Roman Catholics from Goa in India , under the leadership of Fr. Antonio Alvares joined the Syriac Orthodox Church. Fr. Antonio was ordained as a Bishop Mor Julious Alvares for this Goan / Bramhmavar Christians. This group was permitted to use western (latin) rite divine liturgy, with the necessary modifications to comply with the Orthodox theology of the Syriac Church. This group continued to use this western rite worship till the 1960s.
I have found some photos and videos of this "Syriac Orthodox Missionary Church in Brazil within Syriac Orthodox Patriarchate of Antioch".
I noticed that the youtube videos that you have linked are uploaded in 2008. So it must be a recording of the group before they were accepted into the Syriac Orthodox Church in Nov 2011. Also on the blog that you have linked, the last post is on Jan 2011 which is also before Nov 2011.
Someone can tell me does this church is a canonical OO church?
That I dont know. All I know is that a big group of charismatic catholics and some ex anglicans from Brazil were accepted into the Syriac Church in Nov 2011. I dont know if the church that you went to is a canonical OO church.