dangerous Right Then Left pulling HELP!!!!!!!!!

[Redfrog]

driving down the road yesterday I hit the brakes and out of no where the right front brake grabbed hard. When I let off the brakes it pulled real hard to the left. and ever since then
every time I hit the brakes it pulls REAL hard to the right and when I let off it pulls real hard to the left. What causes this?
I had this problem awhile ago but only when I went around corners I thought I had fixed it But I was wrong...
TIA

 

[Thumper]

Sounds to me like one of your calipers is seized. Which ever way it pulls without touching the brake is the one. Then when you apply the brakes, the pressure goes to the other one and it pulls the other way.
Something to look at anyways.
Mike